I don’t think Trump intends to sit behind the desk much...he has to many plans for making America Great Again. That is for Vice President Cruz to do when he is not attending to other VP duties.
The first thing he will learn , which he’s still learning, is what he can’t do what he thinks he can, should he win.....one of which is he will indeed be stifled by that desk and within the “compound” he will reside. He will have no choice....
Further the President swears an oath TO THE CONSTITUTION....which unfortunately Trump knows nor understands much of to use in a favorable way to accomplish what he wants..... His hand will be held throughout like a toddler learning to walk.