Residency Requirements. The Registrar Office must determine your legal residency before you can register and pay fees for any semester or session.Print the Verification of Lawful Presence Form, fill it out and sign the document. Read these additional instructions. Please note: Students also may be required to complete a Residency Affidavit. Parents must fill out residency documents and provide proof of residency (valid Arizona driver's license, utility bill, payroll stub, etc.).