Setup > Initial Setup > Credits
Atlas has built into the system a CREDIT and a DISCOUNT option for Transactions. These allow reductions to a Service or Inventory item price (such as in the case of a coupon or gift certificate)
If you need to specify the Credit, use this box.
Type in a short reason (or description) and the Default Amount for the Credit/Discount.
NOTE: the default amount can be $0.00 and then be filled in at the time of transaction.