This module extends Odoo Point Of Sale features, restricting possibility to cashier to make some actions in the Point of Sale. This module will add the following groups to Odoo:

* **PoS - Negative Quantity**: The cashier can sell negative quantity in Point Of Sale (ie, can return products);
* **PoS - Discount**: The cashier can set Discount in Point Of Sale;
* **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;
