Currently, the checkout step accepts these settings: Allow customers to edit cart product(s) (e.g. Remove or edit quantity) Restrict buyer to select only one of the above products (e.g. when selling similar products with different pricing plans or quantity) Allow buyer to select any of the above product(s) (e.g. when selling multiple products) Force sell all of the above product(s) (e.g. when selling a fixed price bundle) We need another option that accepts different items added to the cart through separate sales pages. It is useful when you want to create a wizard for selling items through a funnel. This way you can have other sales pages, and offer an item to be added to your cart, then users can accept/reject the offer and hit the next button till they reach the checkout page. It can be considered as "checkout wizard" as well.
