diff --git a/pos_access_right/README.rst b/pos_access_right/README.rst
index c92fcdab..de30561d 100644
--- a/pos_access_right/README.rst
+++ b/pos_access_right/README.rst
@@ -6,6 +6,12 @@
 Point of Sale - Extra Access Right for Certain Actions
 ======================================================
 
+This module extends Odoo Point Of Sale features, restricting possibility
+to cashier to make some actions in the Point of Sale (set discount, change
+unit prices, etc...)
+
+this module can be usefull to limit errors and / or fraud.
+
 This module will add the following groups to Odoo:
 
 * PoS - Negative Quantity: The cashier can sell negative quantity in Point Of
@@ -16,6 +22,12 @@ This module will add the following groups to Odoo:
 * PoS - Change Unit Price: The cashier can change the unit price of a product
   in Point Of Sale;
 
+* PoS - Many Orders: The cashier can many orders at the same time;
+
+* PoS - Delete Order: The cashier can not delete a full order;
+
+* PoS - Delete Order Line: The cashier can not delete an order line;
+
 .. image:: /pos_access_right/static/description/new_groups.png
 
 If a user doesn't belong to a group, he can not use the according feature.
diff --git a/pos_access_right/demo/res_groups.yml b/pos_access_right/demo/res_groups.yml
index d79411cb..a0efa203 100644
--- a/pos_access_right/demo/res_groups.yml
+++ b/pos_access_right/demo/res_groups.yml
@@ -16,3 +16,16 @@
 - !record {model: res.groups, id: group_pos_change_unit_price}:
     users:
         - base.user_root
+
+- !record {model: res.groups, id: group_pos_multi_order}:
+    users:
+        - base.user_root
+
+- !record {model: res.groups, id: group_pos_delete_order}:
+    users:
+        - base.user_root
+
+- !record {model: res.groups, id: group_pos_delete_order_line}:
+    users:
+        - base.user_root
+        - base.user_demo
diff --git a/pos_access_right/models/pos_config.py b/pos_access_right/models/pos_config.py
index 19e5fb01..380b6dc0 100644
--- a/pos_access_right/models/pos_config.py
+++ b/pos_access_right/models/pos_config.py
@@ -30,23 +30,59 @@ class PosConfig(models.Model):
         help="This field is there to pass the id of the 'PoS - Allow Unit"
         " Price Change' Group to the Point of Sale Frontend.")
 
+    group_pos_multi_order = fields.Many2one(
+        comodel_name='res.groups',
+        compute='_compute_group_pos_multi_order',
+        string='Point of Sale - Many Orders',
+        help="This field is there to pass the id of the 'PoS - Many Orders"
+        " Group to the Point of Sale Frontend.")
+
+    group_pos_delete_order = fields.Many2one(
+        comodel_name='res.groups',
+        compute='_compute_group_pos_delete_order',
+        string='Point of Sale - Delete Order',
+        help="This field is there to pass the id of the 'PoS - Delete Order'"
+        " Group to the Point of Sale Frontend.")
+
+    group_pos_delete_order_line = fields.Many2one(
+        comodel_name='res.groups',
+        compute='_compute_group_pos_delete_order_line',
+        string='Point of Sale - Delete Order Line',
+        help="This field is there to pass the id of the 'PoS - Delete Order"
+        " Line' Group to the Point of Sale Frontend.")
+
     @api.multi
     def _compute_group_pos_negative_qty(self):
-        print self.env.ref('pos_access_right.group_pos_negative_qty')
         for config in self:
             self.group_pos_negative_qty = \
                 self.env.ref('pos_access_right.group_pos_negative_qty')
 
     @api.multi
     def _compute_group_pos_discount(self):
-        print self.env.ref('pos_access_right.group_pos_discount')
         for config in self:
             self.group_pos_discount = \
                 self.env.ref('pos_access_right.group_pos_discount')
 
     @api.multi
     def _compute_group_pos_change_unit_price(self):
-        print self.env.ref('pos_access_right.group_pos_change_unit_price')
         for config in self:
             self.group_pos_change_unit_price = \
                 self.env.ref('pos_access_right.group_pos_change_unit_price')
+
+    @api.multi
+    def _compute_group_pos_multi_order(self):
+        for config in self:
+            self.group_pos_discount = \
+                self.env.ref('pos_access_right.group_pos_multi_order')
+
+    @api.multi
+    def _compute_group_pos_delete_order(self):
+        for config in self:
+            self.group_pos_discount = \
+                self.env.ref('pos_access_right.group_pos_delete_order')
+
+    @api.multi
+    def _compute_group_pos_delete_order_line(self):
+        for config in self:
+            self.group_pos_discount = \
+                self.env.ref('pos_access_right.group_pos_delete_order_line')
diff --git a/pos_access_right/security/res_groups.yml b/pos_access_right/security/res_groups.yml
index 96acd08d..d4b4e589 100644
--- a/pos_access_right/security/res_groups.yml
+++ b/pos_access_right/security/res_groups.yml
@@ -5,13 +5,25 @@
 
 
 - !record {model: res.groups, id: group_pos_negative_qty}:
-    name: Point of Sale - Allow Negative Quantity
+    name: Point of Sale - Negative Quantity
     category_id: base.module_category_usability
 
 - !record {model: res.groups, id: group_pos_discount}:
-    name: Point of Sale - Allow Discount
+    name: Point of Sale - Discount
     category_id: base.module_category_usability
 
 - !record {model: res.groups, id: group_pos_change_unit_price}:
-    name: Point of Sale - Allow Unit Price Change
+    name: Point of Sale - Unit Price Change
+    category_id: base.module_category_usability
+
+- !record {model: res.groups, id: group_pos_multi_order}:
+    name: Point of Sale - Many Orders
+    category_id: base.module_category_usability
+
+- !record {model: res.groups, id: group_pos_delete_order}:
+    name: Point of Sale - Delete Order
+    category_id: base.module_category_usability
+
+- !record {model: res.groups, id: group_pos_delete_order_line}:
+    name: Point of Sale - Delete Order Line
     category_id: base.module_category_usability
diff --git a/pos_access_right/static/description/new_groups.png b/pos_access_right/static/description/new_groups.png
index 11a1c616..43ce34c8 100644
Binary files a/pos_access_right/static/description/new_groups.png and b/pos_access_right/static/description/new_groups.png differ
diff --git a/pos_access_right/static/src/css/pos_access_right.css b/pos_access_right/static/src/css/pos_access_right.css
index 00bc938a..e10fe1d7 100644
--- a/pos_access_right/static/src/css/pos_access_right.css
+++ b/pos_access_right/static/src/css/pos_access_right.css
@@ -6,6 +6,7 @@
 
 .pos-disabled-mode {
     color: #bbb !important;
+    background-color: #d3d3d3 !important;
 }
 .pos-disabled-mode:hover {
     background: #e2e2e2 !important;
diff --git a/pos_access_right/static/src/js/pos_access_right.js b/pos_access_right/static/src/js/pos_access_right.js
index 4013d204..cf22dd31 100644
--- a/pos_access_right/static/src/js/pos_access_right.js
+++ b/pos_access_right/static/src/js/pos_access_right.js
@@ -9,6 +9,7 @@ odoo.define('pos_access_right.pos_access_right', function (require) {
     "use strict";
 
     var screens = require('point_of_sale.screens');
+    var chrome = require('point_of_sale.chrome');
     var models = require('point_of_sale.models');
     var gui = require('point_of_sale.gui');
     var core = require('web.core');
@@ -38,6 +39,12 @@ point_of_sale.gui
         else{
             $(".mode-button[data-mode='price']").addClass('pos-disabled-mode');
         }
+        if (user.groups_id.indexOf(this.pos.config.group_pos_multi_order[0]) != -1){
+            $('.neworder-button').removeClass('pos-disabled-mode');
+        }
+        else{
+            $('.neworder-button').addClass('pos-disabled-mode');
+        }
     };
 
 
@@ -49,6 +56,9 @@ point_of_sale.models
     models.load_fields("pos.config", "group_pos_negative_qty");
     models.load_fields("pos.config", "group_pos_discount");
     models.load_fields("pos.config", "group_pos_change_unit_price");
+    models.load_fields("pos.config", "group_pos_multi_order");
+    models.load_fields("pos.config", "group_pos_delete_order");
+    models.load_fields("pos.config", "group_pos_delete_order_line");
 
     // Overload 'set_cashier' function to display correctly
     // unauthorized function after cashier changed
@@ -58,6 +68,35 @@ point_of_sale.models
         _set_cashier_.call(this, user);
     };
 
+/* ********************************************************
+chrome.OrderSelectorWidget
+******************************************************** */
+    chrome.OrderSelectorWidget.include({
+
+        neworder_click_handler: function(event, $el) {
+            if (this.pos.get_cashier().groups_id.indexOf(this.pos.config.group_pos_multi_order[0]) == -1) {
+                this.gui.show_popup('error',{
+                    'title': _t('Negative Quantity - Unauthorized function'),
+                    'body':  _t('Please ask your manager to do it.'),
+                });
+            }
+            else {
+                return this._super();
+            }
+        },
+        deleteorder_click_handler: function(event, $el) {
+            if (this.pos.get_cashier().groups_id.indexOf(this.pos.config.group_pos_delete_order[0]) == -1) {
+                this.gui.show_popup('error',{
+                    'title': _t('Delete Order - Unauthorized function'),
+                    'body':  _t('Please ask your manager to do it.'),
+                });
+            }
+            else {
+                return this._super();
+            }
+        },
+    });
+
 
 /* ********************************************************
 screens.NumpadWidget
@@ -84,6 +123,19 @@ screens.NumpadWidget
             }
         },
 
+        // block '+/-' button if user doesn't belong to the correct group
+        clickDeleteLastChar: function() {
+            if (this.pos.get_cashier().groups_id.indexOf(this.pos.config.group_pos_delete_order_line[0]) == -1) {
+                this.gui.show_popup('error',{
+                    'title': _t('Delete Order Line - Unauthorized function'),
+                    'body':  _t('Please ask your manager to do it.'),
+                });
+            }
+            else {
+                return this._super();
+            }
+        },
+
         // block 'discount' or 'price' button if user doesn't belong to the correct group
         clickChangeMode: function(event) {
             if (event.currentTarget.attributes['data-mode'].nodeValue == 'discount' &&