14 – % on categrory
It allows you to apply a discount on sales from one category.

Usage : Type the percentage of the discount on the numerical keyboard, then type «% on category» and choose the category where the discount should be applied.

15 – % on SubTotal

Same as above, but applies on the subtotal of the whole transaction.

Usage : Type the percentage of the discount on the numerical keyboard, then type «% on subtotal».

The two discounts on category and on subtotal can not be combined!

16 – % on item

It allows you to apply a discount on sales to a single item.

Usage : Type the percentage of the discount on the numerical keyboard, then type «% on item» and choose the item where the discount should be applied.

Notice: It is not possible to cumulate multiple discounts, (category and item, item and subtotal, etc)