(1) A determination or approval by the Minister under this Act must be in writing.
(2) A determination or approval takes effect on:
(a) the day stated for the purpose in the determination or approval; or
(b) if no day is stated--the day on which the determination is made, or the approval is given.
(3) The provision of this Act under which, or for the purposes of which, a determination is made or an approval is given may permit the determination or approval to take effect before the day on which the determination is made, or the approval is given.
(4) This subsection authorises the Minister to do something covered by subsection ( 5) if:
(a) a provision of this Act refers to that thing as being done by the Minister; and
(b) no other provision of this Act expressly authorises the Minister to do the thing.
(5) This subsection covers the following:
(a) the making of a determination;
(b) the giving of an approval;
(c) the doing of an act or any other thing.
(6) In this Act, a reference to a determination or approval by the Minister is a reference to such a determination or approval that is in force.