How do I set discount for a given transaction? Add items to your cart. Tap Next to go to the Review Order screen. Tap the Discount row. ( If you don’t see a Discount row, it is because Discount is disabled in app Settings) The Discount seen here is the default Discount as configured in app Settings. Edit the name of the discount. Edit the Discount %. To configure a discount amount, tap on the % button, and enter or edit the dollar amount. Tap Save. Tap Next to proceed with a Card or Cash transaction. For additional support, please refer to the Support Page in your merchant portal or contact your ISO contact.