Please see the tutorials at geck.gamesas.com. In most 3D editing programs including geck, a wall is transparent when viewed from one side, so that you can work on the other side. You can look at any of the existing buildings to see how they work. In most cases, a building such as one of the shacks is a single placed object in geck. If you have placed an NPC in geck and loaded the file in game, the NPC should be there. To give them clothing, use the inventory tab of the NPC. Again, you can look at any of the existing NPC's to see what inventory they have.
No maybe I was not clear the builings in the game are transparent I know that while I modding that they r that way but in the game they should work but it does not. And I got the NPC fiend to work but
I want to create a non-combat NPC. I got combat NPC to show up but the junkie NPC that is non combat is not thier the reference is thier but not him.