diff --git a/addons/account/res_config.py b/addons/account/res_config.py
index 658f87962ff..04831254bf9 100644
--- a/addons/account/res_config.py
+++ b/addons/account/res_config.py
@@ -114,6 +114,9 @@ class account_config_settings(osv.osv_memory):
             help="This purchase tax will be assigned by default on new products."),
         'decimal_precision': fields.integer('Decimal precision on journal entries',
             help="""As an example, a decimal precision of 2 will allow journal entries  like: 9.99 EUR, whereas a decimal precision of 4 will allow journal  entries like: 0.0231 EUR."""),
+        'group_multi_currency': fields.boolean('allow multi currencies',
+            implied_group='base.group_multi_currency',
+            help="Allows you multi currency environment"),
     }
 
     def _default_company(self, cr, uid, context=None):
diff --git a/addons/account/res_config_view.xml b/addons/account/res_config_view.xml
index 79a65f70414..2ae5f8ed5ac 100644
--- a/addons/account/res_config_view.xml
+++ b/addons/account/res_config_view.xml
@@ -121,6 +121,10 @@
                         </div>
                         <label for="id" string="Features"/>
                         <div>
+                            <div>
+                                <field name="group_multi_currency" class="oe_inline"/>
+                                <label for="group_multi_currency"/>
+                            </div>
                             <div>
                                 <field name="module_account_accountant" class="oe_inline"/>
                                 <label for="module_account_accountant"/>
diff --git a/addons/hr/security/hr_security.xml b/addons/hr/security/hr_security.xml
index 5e4c3052858..b7848827f18 100644
--- a/addons/hr/security/hr_security.xml
+++ b/addons/hr/security/hr_security.xml
@@ -2,13 +2,19 @@
 <openerp>
     <data noupdate="1">
 
+    <record model="res.groups" id="base.group_user">
+        <field name="comment">Employee: the user will be able to manage his own human resources stuff (leave request, timesheets, ...), if he is linked to an employee in the system.</field>
+    </record>
+
     <record id="base.group_hr_user" model="res.groups">
         <field name="name">Officer</field>
         <field name="category_id" ref="base.module_category_human_resources"/>
         <field name="implied_ids" eval="[(4, ref('base.group_user'))]"/>
+        <field name="comment">Officer: the user will be able to approve document created by employees</field>
     </record>
     <record id="base.group_hr_manager" model="res.groups">
         <field name="name">Manager</field>
+        <field name="comment">Manager: the user will have an access to the human resources configuration as well as statistic reports</field>
         <field name="category_id" ref="base.module_category_human_resources"/>
         <field name="implied_ids" eval="[(4, ref('base.group_hr_user'))]"/>
         <field name="users" eval="[(4, ref('base.user_root'))]"/>
diff --git a/addons/sale/security/sale_security.xml b/addons/sale/security/sale_security.xml
index 47a577e77c3..8b633583902 100644
--- a/addons/sale/security/sale_security.xml
+++ b/addons/sale/security/sale_security.xml
@@ -5,16 +5,19 @@
     <record id="base.group_sale_salesman" model="res.groups">
         <field name="name">User - Own Leads Only</field>
         <field name="category_id" ref="base.module_category_sales_management"/>
+        <field name="comment">User - Own Leads Only: the user will have access to his own data in the sales application.</field>
     </record>
 
     <record id="base.group_sale_salesman_all_leads" model="res.groups">
         <field name="name">User - All Leads</field>
         <field name="category_id" ref="base.module_category_sales_management"/>
         <field name="implied_ids" eval="[(4, ref('base.group_sale_salesman'))]"/>
+        <field name="comment">User - All Leads: the user will have access to all records of everyone in the sales application.</field>
     </record>
 
     <record id="base.group_sale_manager" model="res.groups">
         <field name="name">Manager</field>
+        <field name="comment">Manager: the user will have an access to the sales configuration as well as statistic reports.</field>
         <field name="category_id" ref="base.module_category_sales_management"/>
         <field name="implied_ids" eval="[(4, ref('base.group_sale_salesman_all_leads'))]"/>
         <field name="users" eval="[(4, ref('base.user_root'))]"/>