(1) Until the prescribed date, the powers conferred on the Judicial and Legal Services Commission by sections 5 and 12 of this Order may be exercised by an interim Commission consisting of—
(a) the Chief Justice, who shall be the Chairman,
(b) one person, appointed by the Chief Justice, who is or has been a judge of a court of unlimited jurisdiction in civil and criminal matters in some part of the Commonwealth or a court having jurisdiction in appeals from any such court, and
(c) three persons appointed by the Chief Justice with the concurrence of the Premiers or, as the case may be, Chief Ministers of not less than 4 of the States, one of whom has been a judge of such a court.
(2) A person who is in practice as an advocate before the Supreme Court established by the Order of 1959 shall not be appointed under subsection (1) of this section.