PLEASE ADD A [BOGO] OR [BUY-BACK] OPTION TO THE DISCOUNTS.

This will allow Bars and Restaurants to give Bartenders access to a discount that has criteria that must be met before apply the discount.  Most bars have a 3 or 4 beer limit per person before allowing a Buy Back and some even only allow it during certain hours of the day.  This should also be allowed to Auto Add the discount when the criterias are met