(1) The staff of the Tribunal must be persons engaged under the Public Service Act 1999 .
(2) For the purposes of the Public Service Act 1999 :
(a) the following persons together constitute a Statutory Agency:
(ii) the staff of the Tribunal referred to in subsection (1);
(iii) the Senior Reviewer and the other Reviewers of the Immigration Assessment Authority; and
(b) the Registrar is the head of that Statutory Agency.