Rights issue: Customer service for Sales Orders
I need to create a customer service group which allow user to view(Read) Sales Orders, Customers, Invoices etc.
For that i have created a group 'Customer Service' in a separate module. Now instead setting rights for sale, stock, account, crm in core modules i want to set it in inherited modules for e.g rights for sale should be in sale_extension like wise.
I did same but the problem is if sale, sale_extension and stock is installed and i am accessing Sales -> Sales Orders it will raise warning Access Denied for model stock.picking, stock.move etc. as stock_extension(module containing rights for stock) is not installed.
How can i achieve this by setting rights in different modules?