User: Own Documents Only
the user will have access to his own data in the sales application.
User: All Documents
the user will have access to all records of everyone in the sales application.
Manager
the user will have an access to the sales configuration as well as statistic reports.
Sales Team multi-company
['|',('company_id','=',False),('company_id','child_of',[user.company_id.id])]