Is it possible to register a person in this order?

There is a man with disability group 1, bedridden. His wife has a power of attorney to manage all his affairs. They have a son who is the owner of the house in which the father must be registered. If the son makes a power of attorney for his mother, will she be able to register her husband at the new address of residence in TsNAP without the presence of the owner of both powers of attorney?