In Odoo v8 when I (Admin) created a sales order it automatically creates a Delivery Order. Then I run schedulers and the system create a Purchase order (if minimal rule required).
The other employees of the company can view the sales order, but can not view or edit the Delivery Order and can not receive the products of that purchase order.
The question is, How to allow employees to alter and / or manage documents (purchase orders, Receiving products, pickings, etc.) created by the admin?

I have read a lot of forum posts and the Odoo documentation (v7), but I have not managed to set permissions to allow user manage orders created by me and the next workflow and finally sending orders.

Please help me.

Thank you