Naveed
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.