The Minister may appoint a person to act as the Chief Executive Officer:
(a) during a vacancy in the office of Chief Executive Officer, whether or not an appointment has previously been made to the office; or
(b) during any period, or during all periods, when the Chief Executive Officer is absent from duty or from Australia, or is, for any reason, unable to perform the duties of the office.
Note: For rules that apply to acting appointments, see section 33A of the Acts Interpretation Act 1901 .