This form, when completed correctly, fulfills this purpose. This authorization is limited to the properties listed below and on the attached continuation form(s).A taxpayer may use Form 285 to authorize ADOR to release confidential information to the taxpayer's appointee. Instructions: Fill out this form to add a person or organization as your authorized representative for your application. Form 8879 serves as an authorization (or electronic signature) for your return. AZ-8879 should be signed before the transmission of the return. A taxpayer may also use Form 285 to grant additional powers to the Appointee, up to and including a power of attorney. Enter the 'email.arizona. Apostille and Certificate of Authentication. This individual will be able to assist you in the following ways: • Complete and sign your application, forms, and other Department paperwork for you.