Wall niche with Recessed Shelves

[jlesniak]

Hello all, hope your Christmas was as wonderful as mine!

But back to the move the wall around game...(what else am I supposed to do, play with the wii all day?)

Anyway I am hoping someone can tell me how to make an in wall recessed shelf, such as in a shower. I tried changing the wall to only 1" but it keeps snapping to center which does not show what I need.

Anyone try this before?