Entitlement to bring or contest proceedings
6.—(1) A tribunal may at any time before the hearing of an originating application, on the application of a party made by notice to the Secretary or of its own motion, hear and determine any issue relating to the entitlement of any party to bring or contest the proceedings to which the originating application relates.
(2) A tribunal shall not determine such an issue unless the Secretary has sent notice to each of the parties giving them an opportunity to submit representations in writing and to advance oral argument before the tribunal.