You can build Vault-Tec Workshop's new items outside of Vault 88 in other settlements. An early description of the DLC indicates that you will be able to change the appearance of settlers using the barber chair or surgery chair, but sadly they're just for your own use. You will interview the first three settlers, but after that the settlers will just appear as they have in previous settlements. One is in the North-East Sector and puts you in University Point and the other is in the North Sector and puts you by Milton General Hospital. The other two are on opposite sides of the cave the vault has been built in. The first is the main 9 cog classic vault door. Similar to other settlements, you can assign a settler to create a supply line to share resources and inventory among settlements.

Unlock them in Better Living Underground and Explore Vault 88 to have access to the entire buildable area of Vault 88. Steel is the main structure component, but there is an abundance of it in Vault 88. Doctor Sun in Diamond City will have you covered with his shipments of rubber and Myrna at Diamond City Surplus has shipments of ceramic. You will be able to scrap a lot of debris around the vault area, but having some extra rubber and ceramic will be useful, too. The Scrapper and Strongback perks will come in handy as will an established hoarding problem.

Settlement terminal fallout 4