Interpretation Act 1987 No 15
47 Powers of appointment imply certain incidental powers
(1) If an Act or instrument confers a power on any person or body to appoint a person to an office:(a) the power may be exercised from time to time, as occasion requires, and(b) the power includes:(i) power to remove or suspend, at any time, a person so appointed,(ii) power to appoint some other person to act in the office of a person so removed or suspended,(iii) power to appoint a person to act in a vacant office, whether or not the office has ever been filled, and(iv) power to appoint a person to act in the office of a person who is absent from that office, whether because of illness or otherwise.(2) The power to remove or suspend a person under subsection (1) (b) may be exercised even if the Act or instrument under which the person was appointed provides that a holder of the office to which the person was appointed shall hold office for a specified period of time.(3) The power to make an appointment under subsection (1) (b) may be exercised:(a) as occasion requires,(b) in anticipation of a particular event, so as to provide that the appointment shall take effect when that event occurs, or(c) in anticipation of a particular state of affairs, so as to provide that the appointment shall have effect while that state of affairs exists.