(1) This section applies for the purposes of this Part and of the application of the Administrative Appeals Tribunal Act 1975 in relation to proceedings under this Part.
(2) A decision given by a person on behalf of an agency is taken to have been given by the agency.
(3) The parties to a proceeding before the Tribunal for a review of a decision are as follows:
(a) the person who applied to the Tribunal for a review of the decision under section 57A;
(b) the person who made the request or application in respect of which the decision was made;
(c) the principal officer of the agency, or the Minister, to whom the request or application was made;
(d) any other person who is made a party to the proceeding by the Tribunal under subsection 30(1A) of the Administrative Appeals Tribunal Act 1975 .