my bedroom closet is just a standard closet space and closet door. if i wanted to make the closet entry into a bookcase door with pivot door, how would i get the pivot part done? for instance, would i have to remove the whole doorway even the part that is nailed to frame? do i just leave that part alone and drill the holes needed for the pivot mechenisims only? i have gone on youtube but the only examples are those door systems. i dont want a whole door system i just want a simple swiveling door.