Construction of provisions as to exercise of powers and

28 Construction of provisions as to exercise of powers and duties— (1) Where a written law 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 a written law 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 of the office for the time being or by a person duly appointed to act for him.