(1) Where an Act passed after the commencement of this Act confers a power or imposes a duty, then, unless the contrary intention appears, the power may be exercised and the duty shall be performed from time to time as occasion requires.
(2) Where an Act passed after the commencement of this Act confers a power or imposes a duty on the holder of an office as such, then, unless the contrary intention appears, the power may be exercised and the duty shall be performed by the holder for the time being of the office.
(3) Where an Act passed after the commencement of this Act confers a power to make any rules, regulations, or byelaws, the power shall, unless the contrary intention appears, be construed as including a power, exerciseable in the like manner and subject to the like consent and conditions, if any, to rescind, revoke, amend, or vary the rules, regulations, or byelaws.