How to add maximum & minimum quantity of products for a bundle, not for the individual bundle items. As an example if there is a bundle called “6 item bundle” the maximum quantity of the bundle should be 6. lets assume there are 3 bundle items. If someone need to purchase items from each bundle items, then mix could be 2/2/2 or 6/0/0 or 1/1/4 like wise maximum quantity should be 6 items.