Currently discounting can only be done on Invoices & it applies it to all items and it is the same amount for all items. Or adding a separate Menu Item with a negative amount.
Add the ability to discount individual menu items by dollar value or percentage
Once discounted, the Menu Item should have a field with the original price & also the discounted price. Both should be available as merge fields to use within Document Templates.
Being able to bulk update multiple Menu Items would also be handy as it'd save time when applying the same discount to more than one item.