By default opencart allows you to set minimum quantity allowed to sell per product, but what if you need to sell x product in packs? Opencart do not offers this feature for example you set minimum quantity 5 and user can buy any amount of that product starting from 5. that is 6, 7 etc...

With this module if you set minimum quantity, it will allow your users tobuy only multiplied by that minimum quantity. That is if you set quantity minimum = 2 in a product page. it will allow to buy that product in quantities 2,4,6,8, etc... if you set minimum 3 it will allow to buy only 3, 6, 9, 12 etc....

If user will type not correct quantity ammount , the module will auto correct the quantity to the closest allowed quantity to be bought. For example you allow to buy in packs of 3 items and user enters manually 10 , the module will change it to 9.

This is a must to have module if you do have sell products the ones requires to be sold in quantities.