Hi,
I am looking for same functionality as ubercart product kits have - there is an option to create a product kit while in cart all products behave like individual products. (from ubercart kit edit form: How is this product kit handled by the cart?: As individual products. Customers may add or remove kit components at will. Discounts entered below are not applied to the kit price)
I want to keep quantity fields for individual products enabled in cart. + all discounts are handled by rules.

How to achieve this simple functionality? Thank you.