In proceedings before the Tribunal:
(a) a party other than a body corporate or an unincorporated body of persons may appear in person or be represented by an employee of the party approved by the Tribunal;
(b) a party being a body corporate may be represented by a director or other officer, or by an employee, of the party approved by the Tribunal;
(c) a party being an unincorporated body of persons or a member of such a body may be represented by a member, or by an officer or employee, of the body approved by the Tribunal; and
(d) any party may be represented by a barrister or solicitor of the High Court or of the Supreme Court of a State or of a Territory.