(1) For the purposes of this Part, the party having the carriage of the proceeding shall be:
(a) where the question of law is reserved by the authority at the request of a party – that party; or
(b) where the question of law is reserved by the authority of its own motion – such party as the authority appoints for that purpose.
(2) The party having the carriage of the proceeding shall be called the applicant and the other party concerned shall be called the respondent.