5.—(1) Subject to the following provisions of this regulation, the Secretary of State shall determine the hourly rate at which police reserve trainees are to be paid for participating in training, tests or assessments in accordance with regulation 2.
(2) A determination under paragraph (1) may be made with retrospective effect to any date specified in the determination, but nothing in this paragraph shall be construed as authorising the pay payable to any person to be reduced retrospectively.
(3) A determination under paragraph (1) may make different provision for different cases.
(4) Where a police reserve trainee completes any part of the training specified under regulation 2(b) under arrangements which do not require the presence of other police reserve trainees, police officers or police support staff, standing orders made under regulation 10 may provide for the period for which he is paid for participating in that part of the training to be such period as is determined in accordance with standing orders.
(5) Police reserve trainees shall be paid monthly in arrears, or at such other intervals as the Chief Constable may fix.
(6) The Chief Constable may, if he thinks fit, pay to a police reserve trainee such part of his pay as he may determine in advance of the day on which it would otherwise be due to be paid in accordance with this regulation.
(7) The pay of a police reserve trainee for a quarter of an hour shall be calculated for all purposes at a rate determined by dividing by four the hourly rate determined under paragraph (1).