diff --git a/pos_usability/__manifest__.py b/pos_usability/__manifest__.py
index df609da..03f7a6f 100644
--- a/pos_usability/__manifest__.py
+++ b/pos_usability/__manifest__.py
@@ -4,7 +4,7 @@
 
 {
     "name": "POS Usability",
-    "version": "14.0.1.0.0",
+    "version": "16.0.1.0.0",
     "category": "Point of sale",
     "license": "AGPL-3",
     "summary": "Misc usability improvement for point of sale",
@@ -33,5 +33,5 @@ Akretion:
         "views/pos_session.xml",
         "views/product.xml",
         ],
-    "installable": False,
+    "installable": True,
 }
diff --git a/pos_usability/models/pos_category.py b/pos_usability/models/pos_category.py
index 09747c8..518c671 100644
--- a/pos_usability/models/pos_category.py
+++ b/pos_usability/models/pos_category.py
@@ -11,15 +11,18 @@ class PosCategory(models.Model):
     product_count = fields.Integer(
         '# Products', compute='_compute_product_count',
         help="The number of products under this point of sale category "
-        "(does not consider the children categories)")
+        "(children categories included)")
 
-    # inspired by the code of odoo/addons/product/models/product.py
+    # inspired by the code of odoo/addons/product/models/product_category.py
     def _compute_product_count(self):
         read_group_res = self.env['product.template'].read_group(
-            [('pos_categ_id', 'in', self.ids)],
+            [('pos_categ_id', 'child_of', self.ids)],
             ['pos_categ_id'], ['pos_categ_id'])
         group_data = dict(
             (data['pos_categ_id'][0], data['pos_categ_id_count']) for data
             in read_group_res)
         for pos_categ in self:
-            pos_categ.product_count = group_data.get(pos_categ.id, 0)
+            product_count = 0
+            for sub_categ_id in pos_categ.search([('id', 'child_of', pos_categ.ids)]).ids:
+                product_count += group_data.get(sub_categ_id, 0)
+            pos_categ.product_count = product_count
diff --git a/pos_usability/models/pos_payment_method.py b/pos_usability/models/pos_payment_method.py
index 4707db3..4f2f19c 100644
--- a/pos_usability/models/pos_payment_method.py
+++ b/pos_usability/models/pos_payment_method.py
@@ -9,4 +9,6 @@ class PosPaymentMethod(models.Model):
     _inherit = 'pos.payment.method'
     _check_company_auto = True
 
-    cash_journal_id = fields.Many2one(check_company=True)
+    outstanding_account_id = fields.Many2one(check_company=True)
+    receivable_account_id = fields.Many2one(check_company=True)
+    journal_id = fields.Many2one(check_company=True)
diff --git a/pos_usability/models/product.py b/pos_usability/models/product.py
index 4e8f2dc..b56211d 100644
--- a/pos_usability/models/product.py
+++ b/pos_usability/models/product.py
@@ -8,5 +8,6 @@ from odoo import fields, models
 class ProductTemplate(models.Model):
     _inherit = 'product.template'
 
-    available_in_pos = fields.Boolean(tracking=True)
+    available_in_pos = fields.Boolean(tracking=True, default=True)
+    to_weight = fields.Boolean(tracking=True)
     pos_categ_id = fields.Many2one(tracking=True)
diff --git a/pos_usability/report/pos.xml b/pos_usability/report/pos.xml
index 4792084..9729b38 100644
--- a/pos_usability/report/pos.xml
+++ b/pos_usability/report/pos.xml
@@ -4,6 +4,7 @@
 
 <template id="report_saledetails" inherit_id="point_of_sale.report_saledetails">
 
+    <!-- In tax table, add a column for the TTC amount -->
     <xpath expr="//table[3]/thead/tr/th[3]" position="after">
         <th>Amount</th>
     </xpath>
diff --git a/pos_usability/views/pos_session.xml b/pos_usability/views/pos_session.xml
index 80f3c4a..1d5beef 100644
--- a/pos_usability/views/pos_session.xml
+++ b/pos_usability/views/pos_session.xml
@@ -15,20 +15,6 @@
         <button name="show_journal_items" position="after">
             <button name="%(point_of_sale.action_report_pos_order_all)d" type="action" class="oe_stat_button" icon="fa-table" string="Stats" context="{'search_default_session_id': active_id}"/>
         </button>
-        <xpath
-            expr="//field[@name='cash_register_total_entry_encoding']/parent::group"
-            position="before"
-        >
-        <group>
-            <field
-                    style="text-align:right;margin:0;padding:0;"
-                    name="cash_register_balance_start"
-                    widget="monetary"
-                    options="{'currency_field': 'currency_id'}"
-                    string="Starting Balance"
-                />
-        </group>
-        </xpath>
     </field>
 </record>
 
diff --git a/pos_usability/views/product.xml b/pos_usability/views/product.xml
index f1e81aa..20b09c5 100644
--- a/pos_usability/views/product.xml
+++ b/pos_usability/views/product.xml
@@ -15,7 +15,9 @@
     <field name="model">product.template</field>
     <field name="inherit_id" ref="point_of_sale.product_template_form_view"/>
     <field name="arch" type="xml">
-        <xpath expr="//group[@name='pos']//field[@name='available_in_pos']" position="replace"/>
+	<xpath expr="//group[@name='pos']//field[@name='available_in_pos']" position="attributes">
+	    <attribute name="invisible">1</attribute>
+        </xpath>
         <xpath expr="//div[@name='options']//field[@name='sale_ok']/.." position="after">
             <div name="available_in_pos">
                 <field name="available_in_pos"/>
@@ -33,9 +35,6 @@
         <field name="categ_id" position="after">
             <field name="pos_categ_id" filter_domain="[('pos_categ_id', 'child_of', raw_value)]"/>
         </field>
-        <filter name="categ_id" position="after">
-            <filter name="pos_categ_groupby" string="Point of Sale Category" context="{'group_by': 'pos_categ_id'}"/>
-        </filter>
     </field>
 </record>