Part II — COMMENCEMENT OF ARBITRATION
6.1 Joinder. The Registrar may, before the constitution of the Tribunal, and the Tribunal may, thereafter, permit the joinder of an additional party where:
6.1.1 the additional party is prima facie bound by the arbitration agreement; or 6.1.2 all parties, including the additional party, consent in writing.
6.2 Consolidation. The Registrar may consolidate two or more arbitrations pending under these Rules into a single arbitration where:
6.2.1 all parties have agreed to consolidation; 6.2.2 all claims are made under the same arbitration agreement; or 6.2.3 the arbitrations involve the same parties, the disputes arise in connection with the same legal relationship, and the arbitration agreements are compatible.
6.3 Multi-Contract Claims. A party may make claims arising out of or in connection with more than one contract in a single Request, provided that all such claims are made under arbitration agreements compatible with these Rules and with each other.
6.4 The Registrar shall decide applications under this Article after inviting brief written submissions from all affected parties. The decision of the Registrar is administrative and does not prejudice any jurisdictional determination by the Tribunal.
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