Adding items to a cart via check boxes
We have created a "catering" order form and would like to know how to submit data from a check box to the cart. The check box items do not have a value with respect to dollars, simply adding a type of sandwich they want in a platter or salad toppings. They can choose more than one check box but we are not sure how to get that data to roll over to the cart???? I have attached all files that I think are relevant, any guidance would be greatly appreciated!