Promotions can be setup to automatically discount items or trigger any promotions you are running in your venue. You can find promotions under File > Sales > Promotions > Promotions.

When creating a promotion you can set it to apply certain discounts or promotions, the different types are below:

                $ Discount Off Items

                % Discount Off Items

                Fixed Price For Items

                Bonus Stock Item

                Cheapest Item Discount

                Unit Price Each

                $ Discount Off Total

                Expensive Item % Discount

                $ Discount Each Item

Each of these types are as the name suggests and can allow many things from a buy 1 Coffee Get One Free promo to a Coffee and Cake Promo