19.—(1) Members shall be paid at such intervals as the Police Authority may fix and the Police Authority may fix different intervals for different ranks of members.
(2) In fixing the interval for any rank, the Police Authority shall have regard to the wishes of the members of that rank.
(3) The Police Authority may, if it thinks fit, pay to a member such part of his pay as it may determine in advance of the day on which it would otherwise be due to be paid in accordance with this regulation.