Allows user to insert the promotion price for the item group.
Min Purchase Qty: the minimum purchased quantity to entitle for the promotional price and discount. Max Purchase Qty: the maximum purchased quantity to be allowed in single receipt. This option will only work when the option "Not allow to proceed if exceed maximum purchase qty" is enabled. Discount: the discount percentage of the item. Member Price/Discount 1~3: Discount and (or) price according to member's level.
