The doors in this section is for automatically swapping all, or some of the doors in your kitchen. If you have nothing in your model selected and you pick one of these you will have the choice to apply these doors to every cabinet in your kitchen. You can also select a group of cabinets and then a door and only those cabinets will have their doors swapped. Finally, if you want to remove a particular door, use the "hidden door" choice near the bottom.