Is there a straight forward way to put an electric outlet into an island cabinet? I found make an invisible wall dated 1999...I can drag one from an exterior wall but when I go to drag one to the other side of the island it snaps to an interior wall and won't move. I imported a SU symbol for now and can indicate the outlet on the electric plan in PDF or CAD after the fact but it seems there ought to be a way. What am I missing?