Section 20 of the Principal Act is amended:
(a) by omitting subsection ( 1) and substituting the following subsection:
(1) The relevant authority in relation to a component of the Service shall, on behalf of the Commonwealth, appoint as officers in that component such number of persons as he thinks necessary for the purpose of achieving the object of this Act in relation to that component.;
(b) by inserting in subsection ( 2) "by a relevant authority" after "officer" (first occurring);
(c) by omitting "Commissioner" from subsection ( 2) (wherever occurring) and substituting "relevant authority";
(d) by omitting from subsection ( 3) "The Commissioner" and substituting "The relevant authority"; and
(e) by omitting subsections ( 4) and (5) and substituting the following subsections:
(4) Subject to this Part, officers hold office on such terms and conditions as the Public Service Board determines.
(5) A determination under subsection ( 4) may make provision for or in relation to a matter by applying, adopting or incorporating, with or without modification, a determination made under section 82D of the Public Service Act 1922 .
(6) Subsections 82D(8) to (12), inclusive, and sections 82E and 82F of the Public Service Act 1922 apply in relation to determinations made under subsection ( 4) of this section in like manner as they apply in relation to determinations made under section 82D of the Public Service Act 1922 .
(7) Officers appointed by a relevant authority shall perform duties as directed by that relevant authority.