(1) The Tribunal may, for the purposes of the review of a Part 7-reviewable decision, exercise all the powers and discretions that are conferred by this Act on the person who made the decision.
(2) The Tribunal may:
(a) affirm the decision; or
(b) vary the decision; or
(c) if the decision relates to a prescribed matter--remit the matter for reconsideration in accordance with such directions or recommendations of the Tribunal as are permitted by the regulations; or
(d) set the decision aside and substitute a new decision; or
(e) if the applicant fails to appear--exercise a power under section 426A in relation to the dismissal or reinstatement of an application.
(3) If the Tribunal:
(a) varies the decision; or
(b) sets aside the decision and substitutes a new decision;
the decision as varied or substituted is taken (except for the purpose of appeals from decisions of the Tribunal) to be a decision of the Minister.
(4) To avoid doubt, the Tribunal must not, by varying a decision or setting a decision aside and substituting a new decision, purport to make a decision that is not authorised by the Act or the regulations.