(a) (Extending disputes): If:
(i) a Dispute is referred to arbitration under this clause 50; and
(ii) there is some other Dispute also between the parties to and under this Deed (whenever occurring),
the arbitrator may, upon application being made to the arbitrator by one or both of the parties at any time before a final award is made in relation to the Dispute that has been referred to arbitration, make an order directing that the arbitration be extended so as to include the other Dispute.
(b) (Arbitrator's order): An arbitrator may make an order under clause 50.6(a) on such terms and conditions (if any) as the arbitrator thinks fit.