Agent Authorization. Use this form to be designated an authorized agent for assessment purposes for the owners of real and business personal property.A petition signer must complete their name, signature, and address in their own handwriting. Step 1: Prepare and file the following forms (you will need to provide the original and at least one photocopy of each form). The signature on the authorization must be an original not a fax or copy. A signed letter or MC 382 must be on file for a non-family member AR with or without DPAP. The assistance of an AR with or without DPAP is limited to:. The server fills out a form called a "proof of service" to show when and where they gave the papers. They give the form back to you so you can file it in court. If the appointment of an AR is completed via any other method (i.e.