The advanced directive for property and finance is an additional document separate and distinct from the power of attorney for healthcare.  This document names a trusted agent to manage the financial and property issues when the senior is not able to function independently.  Who will pay your routine bills if you are hospitalized?  Taxes and upkeep on your home still needs to done even if you are not able to pay these bills.  The power of attorney for property can be as extensive or as narrow as you wish.  These are your assets and you have the power to designate who has authority to manage all or some of your financial resources. 

In some States , the power of attorney for property requires a notary signature.  Witness signatures are usually required.  As with the healthcare power of attorney, you can remove an agent and name another agent as your wish.  No one else can create a power of attorney for property for you on your behalf.  You are the only one who can do this.