diff --git a/studies_base/__manifest__.py b/studies_base/__manifest__.py
index 7e1852c..eaa5196 100644
--- a/studies_base/__manifest__.py
+++ b/studies_base/__manifest__.py
@@ -26,6 +26,10 @@
         "security/ir.model.access.csv",       
         "views/study_config_views.xml",
         "views/study_study_views.xml",
+        "views/study_progress_status_views.xml",
+        "views/study_questionnaire_views.xml",
+        "views/study_questionnaire_response_views.xml",
+        "views/study_participant_views.xml",
         "views/study_menu.xml",
     ],
     # only loaded in demonstration mode
diff --git a/studies_base/models/study_participant.py b/studies_base/models/study_participant.py
index d6ad134..172e4eb 100644
--- a/studies_base/models/study_participant.py
+++ b/studies_base/models/study_participant.py
@@ -13,11 +13,11 @@ class StudyParticipant(models.Model):
     subject = fields.Many2one("res.partner", string="Contact", domain=[("category_patient",'=',1)], readonly=True)
     firstname = fields.Char("Prénom", related="subject.firstname")
     lastname = fields.Char("Nom", related="subject.lastname")
-    progress_status = fields.Many2one("study.participant.progress.status", string="Statut de la participation")
-    state = fields.Many2one("study.participant.state", string="État de la participation")
+    progress_status = fields.Many2one("study.participant.progress.status", string="Statut de la participation", readonly=True)
+    state = fields.Many2one("study.participant.state", string="État de la participation", readonly=True)
 
     part_of_author = fields.Many2one("study.author", string="Platforme d'étude", related="part_of.author")
-    author = fields.Char("ID plateforme")
-    identifier = fields.Char("Idientifiants de l'enrôlement")
+    author = fields.Char("ID plateforme", readonly=True)
+    identifier = fields.Char("Idientifiants de l'enrôlement", readonly=True)
 
-    #questionnaire_responses = fields.One2many("study.questionnaire.response", "study_questionnaire_id", string="Réponses")
+    questionnaire_responses = fields.One2many("study.questionnaire.response", "study_participant_id", string="Réponses")
diff --git a/studies_base/models/study_progress_status.py b/studies_base/models/study_progress_status.py
index f4de451..f6fbc43 100644
--- a/studies_base/models/study_progress_status.py
+++ b/studies_base/models/study_progress_status.py
@@ -7,6 +7,8 @@ from odoo.exceptions import UserError
 class StudyProgressStatus(models.Model):
     _name = "study.progress.status"
 
+    _rec_name = 'state'
+
     study_id = fields.Many2one("study.study", string="Étude")
     state = fields.Selection([
         ('DRAFT', 'Brouillon'), 
diff --git a/studies_base/models/study_questionnaire.py b/studies_base/models/study_questionnaire.py
index 6d40f6d..644a6d3 100644
--- a/studies_base/models/study_questionnaire.py
+++ b/studies_base/models/study_questionnaire.py
@@ -10,7 +10,7 @@ class StudyQuestionnaire(models.Model):
     title = fields.Char("Nom du questionnaire")
     name = fields.Char("Acronyme")
 
-    progress_status = fields.Many2one("study.progress.status", string="Statut du questionnaire")
+    progress_status = fields.Many2one("study.questionnaire.progress.status", string="Statut du questionnaire")
     approval_date = fields.Datetime("Date d'approbation")
     last_review_date = fields.Datetime("Dernière relecture")
     effective_period_start = fields.Datetime("Début de la collecte")
@@ -20,7 +20,7 @@ class StudyQuestionnaire(models.Model):
     category = fields.Many2one("study.questionnaire.category", string="Catégorie de questionnaire")
     type = fields.Many2one("study.questionnaire.type", string="Type de questionnaire")
     purpose = fields.Text("Objectif")
-    subject_type = fields.Many2one("questionnaire.subject.type", string="Sujets")
+    subject_type = fields.Many2one("study.questionnaire.subject.type", string="Sujets")
     description = fields.Text("Description du questionnaire")
 
     jurisdiction = fields.Many2many("study.region", string="Zones géographiques ciblées")
@@ -40,11 +40,11 @@ class StudyQuestionnaire(models.Model):
     repeat_delay = fields.Integer("Délai de répétition")
     repeat_delay_type = fields.Selection([("d", "Jour"), ("m", "Mois"), ("y", "Année")], string="Type de délai de répétition")
     following = fields.Many2one("study.questionnaire", string="Questionnaire précédent")
-    following_repeat_delay = fields.Integer("Délai avec le questionnaire précédent")
-    following_repeat_delay_type = fields.Selection([("d", "Jour"), ("m", "Mois"), ("y", "Année")], string="Type de délai avec le questionnaire précédent")
+    following_delay = fields.Integer("Délai avec le questionnaire précédent")
+    following_delay_type = fields.Selection([("d", "Jour"), ("m", "Mois"), ("y", "Année")], string="Type de délai avec le questionnaire précédent")
     preceding = fields.Many2one("study.questionnaire", string="Questionnaire suivant")
-    preceding_repeat_delay = fields.Integer("Délai avec le questionnaire suivant")
-    preceding_repeat_delay_type = fields.Selection([("d", "Jour"), ("m", "Mois"), ("y", "Année")], string="Type de délai avec le questionnaire suivant")
+    preceding_delay = fields.Integer("Délai avec le questionnaire suivant")
+    preceding_delay_type = fields.Selection([("d", "Jour"), ("m", "Mois"), ("y", "Année")], string="Type de délai avec le questionnaire suivant")
 
     copyright = fields.Text("Copyright")
     copyright_label = fields.Char("Propriétaire et année du copyright")
\ No newline at end of file
diff --git a/studies_base/models/study_questionnaire_response.py b/studies_base/models/study_questionnaire_response.py
index 710625c..b741c65 100644
--- a/studies_base/models/study_questionnaire_response.py
+++ b/studies_base/models/study_questionnaire_response.py
@@ -16,11 +16,11 @@ class StudyQuestionnaireResponse(models.Model):
 
     author = fields.Many2one("study.author", string="Platform d'étude", readonly=True)
     identifier_author = fields.Char("ID plateforme", readonly=True)
-    redirect_url = fields.Char("Lien personnel de redirection vers le questionnaire")
+    redirect_url = fields.Char("Lien personnel de redirection vers le questionnaire", readonly=True)
 
-    study_id = fields.Many2one("study.study", "Étude")
-    study_questionnaire_id = fields.Many2one("study.questionnaire", string="Questionnaire")
-    study_participant_id = fields.Many2one("study.participant", string="Participation")
+    study_id = fields.Many2one("study.study", "Étude", readonly=True)
+    study_questionnaire_id = fields.Many2one("study.questionnaire", string="Questionnaire", readonly=True)
+    study_participant_id = fields.Many2one("study.participant", string="Participation", readonly=True)
     
     source = fields.Many2one("res.partner", string="Contact", domain=[("category_patient",'=',1)], readonly=True)
     firstname = fields.Char("Prénom", related="source.firstname")
diff --git a/studies_base/views/study_config_views.xml b/studies_base/views/study_config_views.xml
index df81633..50c0bfe 100644
--- a/studies_base/views/study_config_views.xml
+++ b/studies_base/views/study_config_views.xml
@@ -313,7 +313,7 @@
     
     
     <!-- MENUS -->
-    <menuitem id="menu_study_config" name="Configuration" parent="menu_study_main" sequence="2">
+    <menuitem id="menu_study_config" name="Configuration" parent="menu_study_main" sequence="999">
         <menuitem id="menu_study_study_config" name="Études">
             <menuitem id="menu_study_author"
                 action="action_study_author"
diff --git a/studies_base/views/study_menu.xml b/studies_base/views/study_menu.xml
index 0bccf7b..bf68f3a 100644
--- a/studies_base/views/study_menu.xml
+++ b/studies_base/views/study_menu.xml
@@ -5,5 +5,17 @@
         <menuitem id="menu_study_study" name="Études"
             action="action_study_study" 
             sequence="1" />
+        <menuitem id="menu_study_progress_status" name="Statuts d'avancement des études"
+            action="action_study_progress_status" 
+            sequence="1" />            
+        <menuitem id="menu_study_questionnaire" name="Questionnaires"
+            action="action_study_questionnaire" 
+            sequence="2" />
+        <menuitem id="menu_study_participant" name="Participants"
+            action="action_study_participant" 
+            sequence="3" />
+        <menuitem id="menu_study_questionnaire_response" name="Réponses aux questionnaires"
+            action="action_study_questionnaire_response" 
+            sequence="4" />
     </menuitem>
 </odoo>
diff --git a/studies_base/views/study_participant_views.xml b/studies_base/views/study_participant_views.xml
new file mode 100644
index 0000000..4116cd7
--- /dev/null
+++ b/studies_base/views/study_participant_views.xml
@@ -0,0 +1,86 @@
+<?xml version="1.0" encoding="UTF-8"?>
+<odoo>
+    <!-- TREE VIEW -->
+    <record id="view_study_participant_tree" model="ir.ui.view">
+        <field name="name">study.participant.tree</field>
+        <field name="model">study.participant</field>        
+        <field name="arch" type="xml">
+            <tree string="Participants">                
+                <field name="part_of"/>            
+                <field name="subject"/>            
+                <field name="firstname"/>            
+                <field name="lastname"/>            
+            </tree>
+        </field>
+    </record>
+
+    <!-- FORM VIEW -->
+    <record id="view_study_participant_form" model="ir.ui.view">
+        <field name="name">study.participant.form</field>
+        <field name="model">study.participant</field>        
+        <field name="arch" type="xml">
+            <form string="Étude">
+                <header>
+                    <!-- action buttons -->
+                </header>
+                <sheet>
+                    <div class="oe_button_box" name="button_box">
+                        <!-- big buttons -->
+                    </div>
+                
+                    <div class="oe_title">
+                        <h1>
+                            <label for="identifier_primary_id" string="Idientifiant Seintinelles" /><field name="identifier_primary_id" />
+                        </h1>
+                        <h2>
+                            <label for="part_of" string="Étude" /><field name="part_of" />
+                        </h2>
+                    </div>
+                    <group name="participant" string="Participant">
+                        <group name="participant_left">
+                            <field name="subject" />
+                            <field name="lastname" />
+                            <field name="firstname" />
+                        </group>
+                        <group name="participant_right">
+                            
+                        </group>
+                    </group>
+                    <group name="participation" string="Participation">
+                        <group name="participation_left">
+                            <field name="progress_status" />
+                            <field name="state" />
+                        </group>
+                        <group name="participation_right">
+                            <field name="part_of_author" />
+                            <field name="author" />
+                            <field name="identifier" />
+                        </group>
+                    </group>
+                    <group name="technique" string="Technique">
+                        <group name="technique_left">
+                            <field name="create_date" />
+                            <field name="write_date" />
+                        </group>
+                        <group name="technique_right">
+                        </group>
+                    </group>
+                    <notebook>
+                        <page string="Réponses" name="responses">
+                            <field name="questionnaire_responses" />
+                        </page>
+                    </notebook>
+                </sheet>
+            </form>
+        </field>
+    </record>
+       
+        
+    <!-- ACTIONS -->
+    <record id="action_study_participant" model="ir.actions.act_window">
+        <field name="name">Participants</field>
+        <field name="type">ir.actions.act_window</field>
+        <field name="res_model">study.participant</field>        
+    </record>
+        
+</odoo>
\ No newline at end of file
diff --git a/studies_base/views/study_progress_status_views.xml b/studies_base/views/study_progress_status_views.xml
new file mode 100644
index 0000000..a1fe61f
--- /dev/null
+++ b/studies_base/views/study_progress_status_views.xml
@@ -0,0 +1,43 @@
+<?xml version="1.0" encoding="UTF-8"?>
+<odoo>
+    <!-- TREE VIEW -->
+    <record id="view_study_progress_status_tree" model="ir.ui.view">
+        <field name="name">study.progress.status.tree</field>
+        <field name="model">study.progress.status</field>        
+        <field name="arch" type="xml">
+            <tree string="Statuts d'avancement des études">                
+                <field name="study_id"/>            
+                <field name="state"/>            
+                <field name="actual"/>            
+                <field name="date_begin"/>            
+                <field name="date_end"/>                
+            </tree>
+        </field>
+    </record>
+
+    <!-- FORM VIEW -->
+    <record id="view_study_progress_status_form" model="ir.ui.view">
+        <field name="name">study.progress.status.form</field>
+        <field name="model">study.progress.status</field>        
+        <field name="arch" type="xml">
+            <form string="Statut d'avancement des études">
+                <group>
+                    <field name="study_id"/>            
+                    <field name="state"/>            
+                    <field name="actual"/>            
+                    <field name="date_begin"/>            
+                    <field name="date_end"/>        
+                </group>
+            </form>
+        </field>
+    </record>
+       
+        
+    <!-- ACTIONS -->
+    <record id="action_study_progress_status" model="ir.actions.act_window">
+        <field name="name">Statuts d'avancement des études</field>
+        <field name="type">ir.actions.act_window</field>
+        <field name="res_model">study.progress.status</field>        
+    </record>
+        
+</odoo>
\ No newline at end of file
diff --git a/studies_base/views/study_questionnaire_response_views.xml b/studies_base/views/study_questionnaire_response_views.xml
new file mode 100644
index 0000000..09eb33f
--- /dev/null
+++ b/studies_base/views/study_questionnaire_response_views.xml
@@ -0,0 +1,92 @@
+<?xml version="1.0" encoding="UTF-8"?>
+<odoo>
+    <!-- TREE VIEW -->
+    <record id="view_study_questionnaire_response_tree" model="ir.ui.view">
+        <field name="name">study.questionnaire.response.response.tree</field>
+        <field name="model">study.questionnaire.response</field>        
+        <field name="arch" type="xml">
+            <tree string="Réponses aux questionnaires">                
+                <field name="start_date"/>            
+                <field name="end_date"/>            
+                <field name="study_id"/>            
+                <field name="study_questionnaire_id"/>            
+                <field name="firstname"/>                
+                <field name="lastname"/>                
+            </tree>
+        </field>
+    </record>
+
+    <!-- FORM VIEW -->
+    <record id="view_study_questionnaire_response_form" model="ir.ui.view">
+        <field name="name">study.questionnaire.response.response.form</field>
+        <field name="model">study.questionnaire.response</field>        
+        <field name="arch" type="xml">
+            <form string="Réponses aux questionnaires">
+                <header>
+                    <!-- action buttons -->
+                </header>
+                <sheet>
+                    <div class="oe_button_box" name="button_box">
+                        <!-- big buttons -->
+                    </div>
+                
+                    <div class="oe_title">
+                        <h1>
+                            <label for="identifier_primary_id" string="Idientifiant Seintinelles" /><field name="identifier_primary_id" />
+                        </h1>
+                    </div>
+                    <group name="collecte" string="Collecte">
+                        <group name="collecte_left">
+                            <field name="start_date" />
+                            <field name="end_date" />
+                            <field name="state" />
+                            <field name="progress_status" />
+                            <field name="authored" />
+                        </group>
+                        <group name="collecte_right">
+                            <field name="author" />
+                            <field name="identifier_author" />
+                            <field name="redirect_url" />
+                        </group>
+                    </group>
+                    <group name="study" string="Étude">
+                        <group name="study_left">
+                            <field name="study_id" />
+                            <field name="study_questionnaire_id" />
+                            <field name="study_participant_id" />
+                        </group>
+                        <group name="study_right">
+                        </group>
+                    </group>
+                    <group name="participant" string="Participant">
+                        <group name="participant_left">
+                            <field name="source" />
+                            <field name="firstname" />
+                            <field name="lastname" />
+                        </group>
+                        <group name="participant_right">
+                        </group>
+                    </group>
+                    <group name="technique" string="Technique">
+                        <group name="technique_left">
+                            <field name="create_date" />
+                            <field name="write_date" />
+                        </group>
+                        <group name="technique_right">
+                        </group>
+                    </group>
+                    
+                </sheet>
+            </form>
+        </field>
+    </record>
+       
+        
+    <!-- ACTIONS -->
+    <record id="action_study_questionnaire_response" model="ir.actions.act_window">
+        <field name="name">Réponses aux questionnaires</field>
+        <field name="type">ir.actions.act_window</field>
+        <field name="res_model">study.questionnaire.response</field>        
+    </record>
+        
+</odoo>
\ No newline at end of file
diff --git a/studies_base/views/study_questionnaire_views.xml b/studies_base/views/study_questionnaire_views.xml
new file mode 100644
index 0000000..9fad061
--- /dev/null
+++ b/studies_base/views/study_questionnaire_views.xml
@@ -0,0 +1,120 @@
+<?xml version="1.0" encoding="UTF-8"?>
+<odoo>
+    <!-- TREE VIEW -->
+    <record id="view_study_questionnaire_tree" model="ir.ui.view">
+        <field name="name">study.questionnaire.tree</field>
+        <field name="model">study.questionnaire</field>        
+        <field name="arch" type="xml">
+            <tree string="Questionnaires">                
+                <field name="title"/>            
+                <field name="name"/>            
+                <field name="effective_period_start"/>            
+                <field name="effective_period_end"/>            
+                <field name="study_id"/>                
+            </tree>
+        </field>
+    </record>
+
+    <!-- FORM VIEW -->
+    <record id="view_study_questionnaire_form" model="ir.ui.view">
+        <field name="name">study.questionnaire.form</field>
+        <field name="model">study.questionnaire</field>        
+        <field name="arch" type="xml">
+            <form string="Questionnaires">
+                <header>
+                    <!-- action buttons -->
+                </header>
+                <sheet>
+                    <div class="oe_button_box" name="button_box">
+                        <!-- big buttons -->
+                    </div>
+                
+                    <div class="oe_title">
+                        <h1>
+                            <label for="title" string="Nom du questionnaire" /><field name="title" />
+                        </h1>
+                        <h2>
+                            <label for="name" string="Acronyme" /><field name="name" />
+                        </h2>
+                    </div>
+                    <group name="status" string="Statut">
+                        <group name="status_left">
+                            <field name="progress_status" />
+                            <field name="approval_date" />
+                            <field name="last_review_date" />
+                        </group>
+                        <group name="status_right">
+                            <field name="effective_period_start" />
+                            <field name="effective_period_end" />
+                        </group>
+                    </group>
+                    <group name="description" string="Description">
+                        <group name="description_left">
+                            <field name="study_id" />
+                            <field name="category" />
+                            <field name="type" />
+                            <field name="purpose" />
+                            <field name="subject_type" />                            
+                        </group>
+                        <group name="description_right">
+                            <field name="description" />
+                            <field name="jurisdiction"  widget="many2many_tags" />
+                            <field name="derived_from" />
+                            <field name="version" />
+                            <field name="status" />
+                        </group>
+                    </group>
+                    <group name="technique" string="Technique">
+                        <group name="technique_left">
+                            <field name="experimental" />
+                            <field name="author" />
+                            <field name="identifier_author" />
+                        </group>
+                        <group name="technique_right">
+                            <field name="identifier_primary_id" />
+                            <field name="create_date" />
+                            <field name="write_date" />
+                        </group>
+                    </group>
+                    <notebook>
+                        <page string="Planification" name="planification">
+                            <group name="planification">
+                                <group name="planification_left">
+                                    <field name="rank_in_study" />                                    
+                                    <field name="fixed_start_date" />
+                                    <field name="fixed_end_date" />
+                                    <field name="repeated" />
+                                    <field name="repeat_delay" />
+                                    <field name="repeat_delay_type" />
+                                </group>
+                                <group name="planification_right">
+                                    <field name="following" />
+                                    <field name="following_delay" />
+                                    <field name="following_delay_type" />
+                                    <field name="preceding" />
+                                    <field name="preceding_delay" />
+                                    <field name="preceding_delay_type" />
+                                </group>
+                            </group>
+                        </page>
+                        <page string="Copyright" name="copyright">
+                            <group name="copyright">
+                                <field name="copyright" />
+                                <field name="copyright_label" />
+                            </group>
+                        </page>                        
+                    </notebook>
+                </sheet>
+            </form>
+        </field>
+    </record>
+       
+        
+    <!-- ACTIONS -->
+    <record id="action_study_questionnaire" model="ir.actions.act_window">
+        <field name="name">Questionnaires</field>
+        <field name="type">ir.actions.act_window</field>
+        <field name="res_model">study.questionnaire</field>        
+    </record>
+        
+</odoo>
\ No newline at end of file
diff --git a/studies_base/views/study_study_views.xml b/studies_base/views/study_study_views.xml
index d29d04c..20eeb5f 100644
--- a/studies_base/views/study_study_views.xml
+++ b/studies_base/views/study_study_views.xml
@@ -1,18 +1,22 @@
 <?xml version="1.0" encoding="UTF-8"?>
 <odoo>
     <!-- TREE VIEW -->
-    <record id="view_stud_study_tree" model="ir.ui.view">
+    <record id="view_study_study_tree" model="ir.ui.view">
         <field name="name">study.study.tree</field>
         <field name="model">study.study</field>        
         <field name="arch" type="xml">
             <tree string="Études">                
-                <field name="name"/>                
+                <field name="title"/>            
+                <field name="name"/>            
+                <field name="period_start"/>            
+                <field name="period_end"/>            
+                <field name="progress_status"/>                
             </tree>
         </field>
     </record>
 
     <!-- FORM VIEW -->
-    <record id="view_stud_study_form" model="ir.ui.view">
+    <record id="view_study_study_form" model="ir.ui.view">
         <field name="name">study.study.form</field>
         <field name="model">study.study</field>        
         <field name="arch" type="xml">