I am looking for a solution so my customers are able to select multiple variants of the same options. I am trying to create add-ons to my products so I would like them to be able to create no add ons or as many addons as possible. For example:
I have a treatment "Back Massage" and bellow I have option called "Add-ons" with multiple variants "A (+10$), B(+15$), C (+10$), D (+35$)"
I would like the customer to be able to select or deselect as many of them as they want and that adds up to the final product price. Right now they can only have 1 add-on.