Find out how to get an arbitrator appointed and the appointment process. 1. Dear Arbitrator: Thank you for your service in the arbitration program.The following question-and-answer checklist and information may help you. What is Arbitration and Mediation? In accordance with its policies, Arizona Association of REALTORS® (AAR) provides arbitration as a service to its members. Either party may file an application with the superior court to confirm the arbitration award.