(1) The relevant authority may, from time to time, alter the classification of a position in the Service by raising or lowering the salary, or the range of salary, applicable to the position.
(2) Whenever the classification of a position is altered, the position shall be deemed to be vacant.
(3) Where the relevant authority makes the same alteration of the classification of all positions having the same classification, the relevant authority may direct in writing that the last preceding subsection shall not apply and, in that case, that subsection does not apply.
(4) Where:
(a) the relevant authority makes an alteration of the classification of a position in a case where there is no other position having the same classification as that position; and
(b) the relevant authority declares in writing that that alteration is related to an alteration in respect of which a direction is or has been given under the last preceding subsection;
the relevant authority may direct in writing that subsection ( 2) shall not apply in relation to that first - mentioned alteration and, in that case, that subsection does not apply.
(5) A direction given by the relevant authority under either of the last two preceding subsections shall be made known to the officers as prescribed.