24.—(1) Subject to paragraphs (3) and (4), this rule applies to a specified appeal.
(2) The chair must cause notice of the date, time and place of the hearing to be given to the Director General at the same time as such notice is given to the appellant and the respondent under rule 18(1).
(3) The Director General may attend the hearing as an observer, except where an appeal is brought in accordance with rule 5 or 6.
(4) This rule does not apply if the Director General is presenting the case in accordance with rule 12(1).