2. Section 5 of the Administration Act 19891 is amended—
(a) by omitting from subsection (2) “this section” and substituting “that subsection”;
(b) by omitting from subsection (3) “This section has” and substituting “Subsections (1) and (2) have”; and
(c) by adding at the end the following subsections:
“(4) An administrative head may, by instrument, delegate to any person all or any of his or her powers under—
(a) a Commonwealth Act;
(b) an instrument of a legislative nature (including a regulation, rule or by-law) made under a Commonwealth Act; or
(c) an instrument of delegation made under a Commonwealth Act.
“(5) Subsection (4) extends to the sub-delegation by an Associate Head of Administration of a power delegated to him or her by the Head of Administration under that subsection.”.