A Washington Limited Power of Attorney Form is created when a Principal wants to give their Agent a specific task to perform or a single responsibility to manage on behalf of the Principal. This is usually financial in nature (IE, managing a specific account, selling a car or filing taxes) but can occasionally give the Agent power to care for the Principal’s children.
In Washington, a Power of Attorney agreement does not need any witnesses, Notary Public or otherwise, in order to be valid. It is still recommended however, that the agreement be witnessed by someone, as it will reduce the, admittedly small, risk that a Judge will declare it invalid. Most law offices will have at least one witness, or a Notary Public, available.