I don't understand your question. If this is the starting situation, how should it look like after the move action?

+---------+---------+ | | | | c | | | | | +---------| a | | | | | d | | | | | +---------+---------+

Thanks for the update. Now the answer: You'll first want to bring the three windows to the same level in the container hierarchy, and then do a layout change command ( layout toggle split , stacking or tabbed ).