Exercise of powers and duties

(1) Where an 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 confers a power or imposes a duty on the holder of an office as holder, 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 confers a power to make any subsidiary legislation or do any act, the power shall, unless the contrary intention appears, be construed as including the power exercisable in the like manner and subject to the like conditions, if any, to amend, vary, rescind, revoke or suspend such subsidiary legislation, or to abstain from doing the act. (4) Where an Act confers upon any person or authority a power to make appointments to any office or place, the power shall, unless the contrary intention appears, be construed as including a power to remove or suspend any person appointed and to appoint another person temporarily in the place of any person so removed or suspended or in place of any sick or absent holder of such office or place.