(1) Subject to an agreement by the parties, the arbitral tribunal decides whether the matter is to be dealt with in oral hearings, or whether the proceedings are to be conducted on the basis of documents and other documentary materials. Where the parties have not ruled out a hearing for oral argument, the arbitral tribunal is to hold such a hearing, on request by a party, at an appropriate stage of the proceedings.
(2) The parties are to be given sufficient advance notice of any hearing and any meeting of the arbitral tribunal arranged for the purpose of taking evidence.
(3) All written pleadings, documents and other communications submitted to the arbitral tribunal by one party are to be communicated to the other party; expert reports and other written evidence on which the arbitral tribunal may rely in making its decision are to be communicated to both parties.