I need to apply discount for a customer and for a product at the same time
and we have an item A with discount 5%
the price of the item A is 100
1 - the cutomer C buy an item A How can I do that in order to get 15 % discount, the final price is 85
2 - the cutomer C buy an item A How can I do that in order to get 10 % first and then 5 % on the total, the final price is 86