Arbitrator Selection and Discovery. The arbitrator will be appointed by the Administrator in accordance with the rules of the Administrator. However, unless the parties agree otherwise, the arbitrator must be a retired or former judge or a lawyer with at least 10 years of experience. In addition to the parties' rights under the Administrator's rules to obtain information prior to the hearing, either party may ask the arbitrator for more information from the other party. The arbitrator will decide the issue in his or her sole discretion, after allowing the other party the opportunity to object.