Each officer of the Tribunal has the following duties, powers and functions:
(a) the issuing of a summons by the Tribunal under paragraph 427(3)(a) or (b) of the Act;
(b) the obtaining of documents in connection with the review of a Part 7 - reviewable decision;
(c) the directing of attendance at a registry of the Tribunal in
connection with the review of a Part 7 - reviewable decision.