Part III — THE ARBITRAL TRIBUNAL
7.1 The Tribunal shall consist of a sole arbitrator or three arbitrators as the parties have agreed.
7.2 Absent party agreement, the Registrar shall determine the number of arbitrators, having regard to:
7.2.1 the complexity of the dispute; 7.2.2 the amount in dispute; 7.2.3 the Track allocated under Part IV; 7.2.4 the preferences expressed by the parties; and 7.2.5 efficient and cost-effective resolution.
7.3 For Small-Value Track and Express Track proceedings under Part IV, the Tribunal shall consist of a sole arbitrator, save in exceptional circumstances as determined by the Registrar for good cause recorded in writing or on joint party election.