So I started playing the vault tec dlc and build my self a small vault with main quarters where all my weapons, armor etc. is displayed.
Finished decorating main area, invited all my companions and I get so much lag, i wanted to build separate cell that will be in the vault 88 and build my quarters there to get rid of that horrible lag, so i thought why not use basement living cells build them and problem sorted, but you cant build those doors in interiors, so I'm writing here hoping some one might tell me what I need to do in the creation kit (or FO4EDIT) to allow those doors from that mod to be build able interiors ???
Thanks for your time.

So If any one knows how workshop features in creation kit work please let me know.