Please, I would thoroughly suggest your team considers adding the option to set limits for the number of modifiers that can be applied to a product. For example, it is very helpful for the cashier to be able to choose only one, two or up to a certain amount of choices of a modifier for each product. By setting such a limit the system will not allow the user to choose more choices of a modifier than the amount set for a specific product and will prompt the user to uncheck one choice to choose another one. By doing so, errors during check out will be eliminated and customers won't be charged for modifiers with extra charge.
Thank you very much!