22.—(1) Subject to paragraph (3), each party may be represented at the hearing by any person whom he or she has authorised for that purpose.
(2) Not later than the expiry of the period within which the prisoner may send written representations to the tribunal under rule 7, a party shall give the tribunal and the other party written notice of the name, address and occupation of any person authorised in accordance with paragraph (1).
(3) The Tribunal may refuse to permit a person to represent a party at the hearing, if it is satisfied that there are good and sufficient reasons for doing so.
(4) Where a prisoner does not authorise a person to act as his or her representative, the tribunal may, with his or her agreement, appoint someone to act on his or her behalf.