(1) After a Commission or a Tribunal has been constituted and proceedings have begun, its composition shall remain unchanged; provided, however, that if a conciliator or an arbitrator should die, become incapacitated, or resign, the resulting vacancy shall be filled in accordance with the provisions of Section 2 of Chapter III or Section 2 of Chapter IV.
(2) A member of a Commission or Tribunal shall continue to serve in that capacity notwithstanding that he shall have ceased to be a member of the Panel.
(3) If a conciliator or arbitrator appointed by a party shall have resigned without the consent of the Commission or Tribunal of which he was a member, the Chairman shall appoint a person from the appropriate Panel to fill the resulting vacancy.
A party may propose to a Commission or Tribunal the disqualification of any of its members on account of any fact indicating a manifest lack of the qualities required by paragraph (1) of Article 14. A party to arbitration proceedings may, in addition, propose the disqualification of an arbitrator on the ground that he was ineligible for appointment to the Tribunal under Section 2 of Chapter IV.
The decision on any proposal to disqualify a conciliator or arbitrator shall be taken by the other members of the Commission or Tribunal as the case may be, provided that where those members are equally divided, or in the case of a proposal to disqualify a sole conciliator or arbitrator, or a majority of the conciliators or arbitrators, the Chairman shall take that decision. If it is decided that the proposal is well-founded the conciliator or arbitrator to whom the decision relates shall be replaced in accordance with the provisions of Section 2 of Chapter III or Section 2 of Chapter IV.