It just means that you’re not gonna place a part down, and go wild with Btools.
Every structure/placeable under Clan Building will be a prebuilt/preset that you can place down and orientate.
I.e everyone is going to have the exact same Wooden Walls, Buildings, Towers, Camps, etc. Outside of it being differentiated via your Clan’s Icon and colors of course.
You can already see it with terrain in the latest Patreon sneak peak a bit.