My father had multiple strokes and cannot communicate or care for himself. Before this he made my Mother primary medical power of attorney and my brother secondary medical power of attorney. He made my Brother sole legal power of attorney. He is in a long term care facility in Arizona where my brother and sister live and my brother needs help with things such as dealing with insurance companies and paying bills that he just doesn't have adequate time to do all on his own. He wishes to make my sister co-legal power of attorney but thinks my father would have to sign a new POA. Since my father is unable to communicate he obviously cannot do this. Is there any way my brother can get this done with maybe medical documentation stating my fathers medical status and inability to act on his own behalf? My brother really needs the help, it's just too much for one person to handle. Also my Mother lives in Ohio and isn't really involved in his care or decisions being made. She verbally agreed to let my brother make decisions.