6. After section 4 of the Principal Act the following section is inserted:
“4A. (1) The Executive may, by commission, appoint persons to be acting Judges of the Court.
“(2) An appointment under subsection (1) shall be for such period, not exceeding 12 months, as is specified in the commission.
“(3) A person is not eligible to be appointed under subsection (1) unless he or she—
(a) has been a Judge of a superior court of record of the Commonwealth, a State or a Territory; or
(b) has been enrolled as a legal practitioner of the High Court or of the Supreme Court of a State or Territory for not less than 5 years.”.