9.—(1) The parties shall be entitled to appear at the hearing.
(2) Any other person may appear at the discretion of the appointed person provided that he has, not later than 7 days before the date of the hearing, served on the authority a statement of his proposed submissions.
(3) The authority shall send a copy of every statement served on it in accordance with sub-paragraph (2) to the appointed person and to the appellant.
(4) A body corporate may appear by its clerk or secretary or by any other officer appointed for the purpose by that body, or by counsel or a solicitor.
(5) A person may appear on his own behalf or be represented by counsel, a solicitor or any other person.
(6) Where there are two or more persons having a similar interest in the subject matter of the hearing, the appointed person may allow one or more persons to appear for the benefit of some or all persons so interested.