Md. Code, Courts and Judicial Proceedings § 3–211

(a) If the arbitration agreement provides a method of appointment of arbitrators, this method shall be followed.

(b) In the absence of a provision in the agreement, a party may file a petition with a court to appoint one or more arbitrators.

(c) A court shall appoint one or more arbitrators if:

(1) The arbitration agreement does not provide a method of appointment;

(2) The agreed method fails or for any reason cannot be followed; or

(3) An appointed arbitrator fails or is unable to act and his successor has not been appointed.

(d) A court appointed arbitrator has all the powers of an arbitrator specifically named in the agreement.