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