25.—(1) Subject to paragraph (2), the parties may appear at the hearing (with assistance from any person if desired), and may be represented by any person, whether or not that person is legally qualified.
(2) If in any particular case the Tribunal is satisfied that there are good and sufficient reasons for doing so, it may refuse to permit a person to assist or represent a party at the hearing.
(3) In this rule, “hearing” means any hearing under these Rules.