(1) The parties may opt out of an expedited arbitration at any time by jointly notifying the Tribunal and Secretary-General in writing of their agreement.

(2) Upon request of a party, the Tribunal may decide that an arbitration should no longer be expedited. In deciding the request, the Tribunal shall consider the complexity of the issues, the stage of the proceeding and all other relevant circumstances.

(3) The Tribunal, or the Secretary-General if a Tribunal has not been constituted, shall determine the further procedure pursuant to Chapters I-XII and fix any time limit necessary for the conduct of the proceeding.