(1) The Secretary-General shall notify the parties of any vacancy on the Tribunal.

(2) The proceeding shall be suspended from the date of notice of the vacancy until the vacancy is filled.

(3) A vacancy on the Tribunal shall be filled by the method used to make the original appointment, except that the Secretary- General shall fill any vacancy that has not been filled within 45 days after the notice of vacancy.

(4) Once a vacancy has been filled and the Tribunal has been reconstituted, the proceeding shall continue from the point it had reached at the time the vacancy was notified. Any portion of a hearing shall be recommenced if the newly appointed arbitrator considers it necessary to decide a pending matter.