Add a Group Discount to a Client's File

For a client to have a group discount every time he returns to you, In the Point of Sale, you can add or create a new client and then edit the file by clicking on the blue pencil beside the name Client. 

In the client's file, go to the Prices tab. Choose the Default price list. This could be the discount used, for example. Note that you can select more than one price list. When a client has more than one price list on a file, the one with the best price for the client will be applied to the client's sales.

Click on Save to keep your modifications.