Choose an agent or attorneyinfact: This person will act on your behalf in the transaction. Limited POA: Grants authority for specific tasks, like selling a property or filing taxes.It ends when the specified activity is complete. Fill out your form and sign it in the presence of a notary. Select Power of Attorney under the Services menu. Select File a power of attorney from the drop-down menu. Learn the steps in a real estate transaction and what happens with sale of property. Find a real estate lawyer. The power of attorney must be legible. You must sign, date it and your signature must be acknowledged.