diff --git a/survey_event_registration_generation/controllers/main.py b/survey_event_registration_generation/controllers/main.py
index ab45bd6..f065aba 100644
--- a/survey_event_registration_generation/controllers/main.py
+++ b/survey_event_registration_generation/controllers/main.py
@@ -8,30 +8,47 @@ from odoo import http
 class Survey(main.Survey):
 
     @http.route(['/survey_event/get_events_from_product'], type='json', auth="public", methods=['POST'])
-    def get_events_from_product(self, product_id, **kw):        
-        if not product_id:
+    def get_events_from_product(self, product_ids, only_visible_in_survey, **kw):    
+        """
+        Called from survey_form.js when event product answer change, reload event list
+        """    
+        if not product_ids:
             return []
-        events = request.env['event.event'].sudo().get_events_visible_in_survey(product_id)
+        events = request.env['event.event'].sudo().get_events_from_event_products(product_ids, only_visible_in_survey=only_visible_in_survey)
         return [{'id':event.id,'name':event.name} for event in events]
 
 
     def _prepare_survey_data(self, survey_sudo, answer_sudo, **post):
         result = super(Survey, self)._prepare_survey_data(survey_sudo, answer_sudo, **post)
-        result['event_products'] = request.env['product.product'].sudo().get_event_products_visible_in_survey()
+        result['event_products'] = request.env['product.product'].sudo().search([('detailed_type','=','event')])
 
         next_event_question = self._get_next_event_question(answer_sudo)
         if next_event_question:
-            event_product_id = None
+            event_products_ids = None
             if next_event_question.event_product_question_id:
-                event_product_id = self._get_answer_event_product(next_event_question.event_product_question_id, answer_sudo).id
-            result['events'] = request.env['event.event'].sudo().get_events_visible_in_survey(event_product_id)
+                event_products_ids = self._get_answer_event_product(next_event_question.event_product_question_id, answer_sudo).id
+            result['events'] = request.env['event.event'].sudo().get_events_from_event_products(event_products_ids)
 
         return result
 
     def _get_answer_event_product(self, question, answer_sudo):
+        """return value(s) selected in for Event Product question.
+        Question can be event_product (only one event product selected)
+        or multiple_event_products (several event products can be selected)
+
+        Args:
+            question (survey.question): Event product question
+            answer_sudo (survey.user.input)
+
+        Returns:
+            List<product.product>: List of selected event products
+        """
         for user_input_line in answer_sudo.user_input_line_ids:
             if user_input_line.question_id == question:
-                return user_input_line.value_event_product
+                if question.question_type == 'event_product':
+                    return [user_input_line.value_event_product]
+                if question.question_type == 'multiple_event_products':
+                    return user_input_line.value_multiple_event_products
 
 
     def _get_next_event_question(self, answer_sudo):
diff --git a/survey_event_registration_generation/i18n/fr.po b/survey_event_registration_generation/i18n/fr.po
index cedd4f3..79dbdae 100644
--- a/survey_event_registration_generation/i18n/fr.po
+++ b/survey_event_registration_generation/i18n/fr.po
@@ -6,8 +6,8 @@ msgid ""
 msgstr ""
 "Project-Id-Version: Odoo Server 16.0\n"
 "Report-Msgid-Bugs-To: \n"
-"POT-Creation-Date: 2023-10-24 08:53+0000\n"
-"PO-Revision-Date: 2023-10-24 08:53+0000\n"
+"POT-Creation-Date: 2023-10-31 09:56+0000\n"
+"PO-Revision-Date: 2023-10-31 09:56+0000\n"
 "Last-Translator: \n"
 "Language-Team: \n"
 "MIME-Version: 1.0\n"
@@ -69,6 +69,12 @@ msgstr "Inscription à une session de formation"
 msgid "Event registration field"
 msgstr "Champ d'inscription à une formation"
 
+#. module: survey_event_registration_generation
+#: model:ir.model.fields,help:survey_event_registration_generation.field_event_event__visible_in_survey
+#: model:ir.model.fields,help:survey_event_registration_generation.field_product_product__visible_in_survey
+msgid "Events in step configured as 'visible in survey'."
+msgstr "Événements dans une étape configurée comme 'visible dans les questionnaires'."
+
 #. module: survey_event_registration_generation
 #: model_terms:ir.ui.view,arch_db:survey_event_registration_generation.survey_form
 msgid "Events registrations"
@@ -93,6 +99,19 @@ msgstr ""
 "Si vous indiquez la question du produit de formation, seuls les sessions de "
 "formation correspondantes seront proposés"
 
+#. module: survey_event_registration_generation
+#: model:ir.model.fields,help:survey_event_registration_generation.field_survey_question__show_events_and_event_products_only_visible_in_survey
+msgid ""
+"In event step configuration, you can check 'Visible in surveys'. \n"
+"        If this option is checked, \n"
+"        If question display events, they are filtered with only events in step 'Visible in survey'. \n"
+"        If question display event products, they are filtered with only products of events in step 'Visible in survey'."
+msgstr ""
+"Dans la configuration des étapes d'événement, vous pouvez cocher la case 'Visible dans les questionnaires'. \n"
+"        Si cette option est cochée, \n"
+"        Si la question affiche des événements, ils seront filtrer pour n'afficher que les événements dans une étape 'Visible dans les questionnaires'. \n"
+"        Si la question affiche des produits d'événement, ils seront filtrés pour n'afficher que les produits des événements dans une étape 'Visible dans les questionnaires'."
+
 #. module: survey_event_registration_generation
 #: model:ir.model.fields,field_description:survey_event_registration_generation.field_survey_user_input_line__value_multiple_event_products
 #: model:ir.model.fields.selection,name:survey_event_registration_generation.selection__survey_question__question_type__multiple_event_products
@@ -125,6 +144,11 @@ msgstr ""
 "Selectionnez la question portant sur le produit de formation, afin de filter"
 " les sessions de formation selectionnées"
 
+#. module: survey_event_registration_generation
+#: model:ir.model.fields,field_description:survey_event_registration_generation.field_survey_question__show_events_and_event_products_only_visible_in_survey
+msgid "Show events or event products in step visible in survey"
+msgstr "Montrer les événements ou les produits d'événement 'visibles dans les questionnaires'."
+
 #. module: survey_event_registration_generation
 #: model:ir.model,name:survey_event_registration_generation.model_survey_survey
 msgid "Survey"
@@ -145,6 +169,12 @@ msgstr "Entrée utilisateur du questionnaire"
 msgid "Survey User Input Line"
 msgstr "Ligne d'entrée pour l'utilisateur du questionnaire"
 
+#. module: survey_event_registration_generation
+#: model:ir.model.fields,field_description:survey_event_registration_generation.field_event_event__visible_in_survey
+#: model:ir.model.fields,field_description:survey_event_registration_generation.field_product_product__visible_in_survey
+msgid "Visible in survey"
+msgstr "Visible dans les questionnaires"
+
 #. module: survey_event_registration_generation
 #: model:ir.model.fields,field_description:survey_event_registration_generation.field_event_stage__visible_in_survey
 msgid "Visible in surveys"
diff --git a/survey_event_registration_generation/models/event_event.py b/survey_event_registration_generation/models/event_event.py
index 56c53e8..b92a06f 100644
--- a/survey_event_registration_generation/models/event_event.py
+++ b/survey_event_registration_generation/models/event_event.py
@@ -4,18 +4,27 @@ from odoo import models, fields, api
 class EventEvent(models.Model):
     _inherit = 'event.event'
 
-    def get_events_visible_in_survey(self, product_id=None):
-        """Search events in stage visible in survey. 
-        Optionnaly filtered by product present in ticket.
+    visible_in_survey = fields.Boolean('Visible in survey', related='stage_id.visible_in_survey', readonly=True, 
+        help="""Events in step configured as 'visible in survey'.""")
+
+
+
+    def get_events_from_event_products(self, product_ids=None, only_visible_in_survey=False):
+        """Search events in stage filtered by product present in ticket..         
 
         Args:
-            product_id (product.product, optional): to filter only events with tickets using this product. Defaults to None.
+            product_ids (list[product.product ids], optional): to filter only events with tickets using product in this list. Defaults to None.
 
         Returns:
             event.event: Events
         """
-        if product_id:
-            event_tickets = self.env['event.event.ticket'].search([('product_id','=',product_id)])
-            return self.env['event.event'].search([('stage_id.visible_in_survey','=',True),('event_ticket_ids','in',event_tickets.id)])
-        return self.env['event.event'].search([('stage_id.visible_in_survey','=',True)])
+        event_search = []
+        if product_ids:
+            event_tickets = self.env['event.event.ticket'].search([('product_id','in',product_ids)])
+            event_search.append(('event_ticket_ids','in',event_tickets.ids))
+
+        if only_visible_in_survey:
+            event_search.append(('visible_in_survey','=',True))
+        
+        return self.env['event.event'].search(event_search)
         
\ No newline at end of file
diff --git a/survey_event_registration_generation/models/product_product.py b/survey_event_registration_generation/models/product_product.py
index 56e709c..8f7b50a 100644
--- a/survey_event_registration_generation/models/product_product.py
+++ b/survey_event_registration_generation/models/product_product.py
@@ -4,15 +4,20 @@ from odoo import models, fields, api
 class ProductProduct(models.Model):
     _inherit = 'product.product'
 
-    def get_event_products_visible_in_survey(self):
-        """Search products used in tickets of events visibles in surveys
+    visible_in_survey = fields.Boolean('Visible in survey', compute='_compute_visible_in_survey', readonly=True, 
+        help="""Events in step configured as 'visible in survey'.""")
+    
 
-        Returns:
-            product.product: products
-        """
-        events = self.env['event.event'].get_events_visible_in_survey()
-        products = set()
+    def _compute_visible_in_survey(self):
+        #get all events in step 'visible in survey'
+        product_ids = set()
+        events = self.env['event.event'].search([('visible_in_survey','=',True)])
         for event in events:
             for ticket in event.event_ticket_ids:
-                products.add(ticket.product_id)
-        return list(products)
\ No newline at end of file
+                product_ids.add(ticket.product_id.id)
+        for event_product in self:
+            if event_product.id in product_ids:
+                event_product.visible_in_survey = True
+            else:
+                event_product.visible_in_survey = False        
+
diff --git a/survey_event_registration_generation/models/survey_question.py b/survey_event_registration_generation/models/survey_question.py
index 7ac9ad6..2fb0a01 100644
--- a/survey_event_registration_generation/models/survey_question.py
+++ b/survey_event_registration_generation/models/survey_question.py
@@ -1,3 +1,4 @@
+from email.policy import default
 from odoo import models, fields, api
 
 
@@ -7,6 +8,12 @@ class SurveyQuestion(models.Model):
     question_type = fields.Selection(
         selection_add=[('event_product', 'Event product'),('event', 'Event'),('multiple_event_products', 'Multiple event products')]) #event_product : List product used in tickets of visible events
                                                                                #event : List events visible in surveys
+
+    show_events_and_event_products_only_visible_in_survey = fields.Boolean('Show events or event products in step visible in survey', 
+        help="""In event step configuration, you can check 'Visible in surveys'. 
+        If this option is checked, 
+        If question display events, they are filtered with only events in step 'Visible in survey'. 
+        If question display event products, they are filtered with only products of events in step 'Visible in survey'.""")
                                                                                    
 
     event_product_question_id = fields.Many2one(
diff --git a/survey_event_registration_generation/models/survey_user_input.py b/survey_event_registration_generation/models/survey_user_input.py
index 07b9e7e..c85f344 100644
--- a/survey_event_registration_generation/models/survey_user_input.py
+++ b/survey_event_registration_generation/models/survey_user_input.py
@@ -19,7 +19,7 @@ class SurveyUserInput(models.Model):
 
     event_id = fields.Many2one('event.event', 'Event', compute='compute_event_id', store=True) #related event - answer of "event" question
 
-    event_product_id = fields.Many2one('product.product', 'Event product', compute='compute_event_product_id', store=True) #related event product - answer of "event product" question
+    event_products_ids = fields.Many2many('product.product', string='Event products', compute='compute_event_products_ids', store=True) #related event products - answer of "event product" or "multiple event product" question
 
     @api.depends('user_input_line_ids')
     def compute_event_id(self):
@@ -32,13 +32,16 @@ class SurveyUserInput(models.Model):
                     break
 
     @api.depends('user_input_line_ids')
-    def compute_event_product_id(self):
-        """set event_product_id as answer of "event product" question
+    def compute_event_products_ids(self):
+        """set event_products_ids as answer of "event product" or "multiple event products" question
         """
         for user_input in self:
             for user_input_line in user_input.user_input_line_ids:
                 if user_input_line.answer_type == 'event_product':
-                    user_input.event_product_id = user_input_line.value_event_product
+                    user_input.event_products_ids = [user_input_line.value_event_product.id]
+                    break
+                if user_input_line.answer_type == 'multiple_event_products':
+                    user_input.event_products_ids = user_input_line.value_multiple_event_products
                     break
 
     def save_lines(self, question, answer, comment=None):
diff --git a/survey_event_registration_generation/static/src/js/survey_form.js b/survey_event_registration_generation/static/src/js/survey_form.js
index d134ca6..5b735e1 100644
--- a/survey_event_registration_generation/static/src/js/survey_form.js
+++ b/survey_event_registration_generation/static/src/js/survey_form.js
@@ -30,22 +30,41 @@ SurveyFormWidget.include({
         return result;
     },
 
-    _onChangeChoiceItem: function (event) {        
-        var event_select = $('select[data-question-type="event"]:visible')
-        
+    _onChangeChoiceItem: function (event) {
+
         //Check if event product selection change
-        if ($(event.currentTarget).data('questionType') == 'event_product') {
-            //Check if event selection visible
-            if (event_select) {
+        var question_type = $(event.currentTarget).data('questionType');
+        if (question_type == 'event_product' || question_type == 'multiple_event_products') {
+
+            //Current question (for event products) id
+            var event_product_question_id = event.currentTarget.name;
+
+            //find event selector concerned by this event product question
+            var event_selects = $('select[data-question-type="event"][data-event-product-question-id="'+event_product_question_id+'"]:visible');
+
+            //find all event products selected in this question
+            var event_product_ids = [];
+            if (question_type == 'multiple_event_products') {
+                // find event products selected in case of multiple event products question                
+                event_product_ids = $('input[name="'+event_product_question_id+'"]:checked').map(function() {
+                    return parseInt($(this).attr("value"));
+                }).get();
+            } else {
+                // find event products selected in case of simple event product question         
+                event_product_ids = [parseInt($(event.currentTarget).find(":selected").val())];
+            }
+
+            // populate concerned events selectors
+            event_selects.each(function( index ) {
+                var event_select = $(this);
+
                 //Disable event selection
                 event_select.prop('disabled', 'disabled');
 
-                //Get event product id
-                var eventProductId = parseInt($(event.currentTarget).find(":selected").val())
-
                 //Ajax : get new events
                 ajax.jsonRpc('/survey_event/get_events_from_product', 'call', {                    
-                    'product_id': eventProductId,                   
+                    'product_ids': event_product_ids,
+                    'only_visible_in_survey': event_select.data('only-visible-in-survey') === "True"
                 }).then((new_events) => {
                     // Delete old events
                     $(event_select).find('option').remove()
@@ -60,8 +79,9 @@ SurveyFormWidget.include({
                     //Enable event selection
                     event_select.prop('disabled', false);
                 });
-                
-            }
+
+            })
+
         }
 
 
diff --git a/survey_event_registration_generation/views/survey_question_views.xml b/survey_event_registration_generation/views/survey_question_views.xml
index b7b421d..1bedb2d 100644
--- a/survey_event_registration_generation/views/survey_question_views.xml
+++ b/survey_event_registration_generation/views/survey_question_views.xml
@@ -7,17 +7,21 @@
         <field name="inherit_id" ref="survey.survey_question_form" />
         <field name="arch" type="xml">
             <xpath expr="//field[@name='comments_allowed']/.." position="after">
-                <group name="event_registration" string="Event registration">
-                    <!-- related event product question, to filter events, in case of event question -->
-                    <field name="event_product_question_id" options="{'no_open': True, 'no_create': True}"
-                        attrs="{'invisible': [('question_type','!=','event')]}" 
-                        help="Select the question asking for event product, to filter proposed events." />
-                        
+                <group name="event_registration" string="Event registration">                                            
                     <!-- event registration field, filtered by event_registration_allowed_field_ids (invisible) -->
                     <field name="event_registration_field" widget="selection" />
                     <field name="event_registration_allowed_field_ids" invisible="1" />
                 </group>
             </xpath>           
+            <xpath expr="//field[@name='validation_required']" position="before">
+                <field name="show_events_and_event_products_only_visible_in_survey" 
+                    attrs="{'invisible': [('question_type', 'not in', ['event_product', 'event', 'multiple_event_products'])]}" 
+                    />
+                <!-- related event product question, to filter events, in case of event question -->
+                <field name="event_product_question_id" options="{'no_open': True, 'no_create': True}"
+                    attrs="{'invisible': [('question_type','!=','event')],'required': [('question_type','=','event')]}" 
+                    help="Select the question asking for event product, to filter proposed events." />
+            </xpath>
 
         </field>
     </record>
diff --git a/survey_event_registration_generation/views/survey_templates.xml b/survey_event_registration_generation/views/survey_templates.xml
index 752dbce..8c0ad54 100644
--- a/survey_event_registration_generation/views/survey_templates.xml
+++ b/survey_event_registration_generation/views/survey_templates.xml
@@ -23,10 +23,12 @@
                 t-att-data-question-type="question.question_type">
                 <option>Please select...</option>
                 <t t-foreach="event_products" t-as="event_product">
-                    <option 
-                        t-att-value="event_product.id"
-                        t-att-selected="answer_lines and (answer_lines[0].value_event_product.id == event_product.id)">
-                        <t t-esc="event_product.name"/></option>
+                    <t t-if="not question.show_events_and_event_products_only_visible_in_survey or (question.show_events_and_event_products_only_visible_in_survey and event_product.visible_in_survey)">
+                        <option 
+                            t-att-value="event_product.id"
+                            t-att-selected="answer_lines and (answer_lines[0].value_event_product.id == event_product.id)">
+                            <t t-esc="event_product.name"/></option>
+                    </t>
                 </t> 
             </select> 
         </div>       
@@ -41,16 +43,18 @@
             <div class="d-flex flex-wrap col-lg-12">
                 <t t-set="has_correct_answer" t-value="scoring_display_correction and any(label.is_correct for label in question.suggested_answer_ids)"/>
                 <t t-foreach="event_products" t-as="event_product">
-                    <label t-att-class="'o_survey_choice_btn form-label me-2 py-1 px-3 rounded %s' % ('o_survey_selected' if answer_line else '')">
-                        
-                        <input type="checkbox" t-att-value='event_product.id' class="o_survey_form_choice_item invisible position-absolute"
-                               t-att-name="question.id" />
-                        <span class="ms-2 text-break" t-field='event_product.name'/>
-                
-                        <i class="fa fa-check-circle float-end mt-1 position-relative"></i>
-                        <i class="fa fa-circle-thin float-end mt-1 position-relative"></i>
-                        
-                    </label>
+                    <t t-if="not question.show_events_and_event_products_only_visible_in_survey or (question.show_events_and_event_products_only_visible_in_survey and event_product.visible_in_survey)">
+                        <label t-att-class="'o_survey_choice_btn form-label me-2 py-1 px-3 rounded %s' % ('o_survey_selected' if answer_line else '')">
+                            
+                            <input type="checkbox" t-att-value='event_product.id' class="o_survey_form_choice_item invisible position-absolute"
+                                t-att-name="question.id" t-att-data-question-type="question.question_type" />
+                            <span class="ms-2 text-break" t-field='event_product.name'/>
+                    
+                            <i class="fa fa-check-circle float-end mt-1 position-relative"></i>
+                            <i class="fa fa-circle-thin float-end mt-1 position-relative"></i>
+                            
+                        </label>
+                    </t>
                 </t>
             </div>            
         </div>
@@ -63,14 +67,19 @@
         <div class="o_survey_comment_container p-0">
             <select class="o_survey_form_choice_item"
                 t-att-name="question.id" 
+                t-att-data-event-product-question-id="question.event_product_question_id.id"
+                t-att-data-event-product-question-type="question.event_product_question_id.question_type"
                 t-att-placeholder="question.question_placeholder" 
-                t-att-data-question-type="question.question_type">
+                t-att-data-question-type="question.question_type"
+                t-att-data-only-visible-in-survey="question.show_events_and_event_products_only_visible_in_survey">
                 <option>Please select...</option>
                 <t t-foreach="events" t-as="event">
-                    <option 
-                        t-att-value="event.id"
-                        t-att-selected="answer_lines and (answer_lines[0].value_event.id == event.id)">
-                        <t t-esc="event.name"/></option>
+                    <t t-if="not question.show_events_and_event_products_only_visible_in_survey or (question.show_events_and_event_products_only_visible_in_survey and event.visible_in_survey)">
+                        <option 
+                            t-att-value="event.id"
+                            t-att-selected="answer_lines and (answer_lines[0].value_event.id == event.id)">
+                            <t t-esc="event.name"/></option>
+                    </t>
                 </t> 
             </select> 
         </div>