84. (1) At a public hearing, each party to the relevant investigation is entitled to appear personally, or where the party is a body of persons (whether incorporated or unincorporated), by an officer, employee or agent of the party.
(2) Except with the consent of the Commissioner—
(a) a natural person is not entitled to be represented at a public hearing by another person; and
(b) a body of persons (whether incorporated or unincorporated) is not entitled to be represented at a public hearing by a person other than a member, officer or employee of the body.