This power of attorney authorizes another person (your agent) to make decisions concerning your property for you (the principal). It's easier than ever to create a valid Ohio POA that reflects your wishes.We'll walk you through everything you need to know. For legal validity, Ohio requires the principal to sign the POA form in the presence of either a notary public or two disinterested witnesses. A Power of Attorney (POA) is a legal document that is a written authorization to allow a person to perform specific acts on your behalf in various matters. Learn about the benefits of Ohio power of attorney documents and how to create a valid power of attorney in Ohio. Use a limited (special) power of attorney form to authorize an agent to handle specific matters on your behalf. Download a free template here. Power of attorney is not a letter it's a legal document. Creating one is often as simple as filling out a form and signing it in the presence of witnesses or even a notary public.