(1) The Minister may, in writing, appoint a person to act as a Tribunal member (other than the President):
(a) during a vacancy in the office, whether or not an appointment has been previously made to the office; or
(b) during any period, or during all periods, when the holder of the office:
(i) is absent from duty or from Australia and New Zealand; or
(ii) is, for any reason, unable to perform the duties of the office.
(2) A copy of the instrument of appointment must be published in the Official Journal .
(3) The Minister:
(a) may terminate the appointment at any time; and
(b) must terminate the appointment if the person appointed fails, without reasonable excuse, to disclose a conflict of interest in accordance with regulation 20.64.
(4) A person is not eligible for appointment to act as a Tribunal member (other than the President) unless the person is eligible for appointment as a Tribunal member under subregulation 20.63(2).