Section 4 of the Principal Act is amended as follows:(a) by inserting in subsection (4) "qualified" after "number of" ;(b) by inserting the following subsection after subsection (4) :(4A) In subsection (4) ,qualified person means a person who (a) is eligible for appointment as a magistrate under section 8(1) ; or(b) is or has been a judge of the Federal Court of Australia; or(c) is or has been a magistrate of the Federal Magistrates Court; or(d) is or has been a magistrate or a judge of a court of another State or a Territory.