How do I rearrange the castle rooms? – Hustle Castle: Kingdom defense Review

I’ve been playing at this game for a few days, and since I have learned a bit about it I want to rearrange the rooms in the castle somewhat. It looks like it should be possible, but I haven’t had any luck doing it yet. Is there any sort of a guide available? Or should I just delete the game?
Review by USAFSS Vet on Hustle Castle: Kingdom defense.