63.—(1) This regulation and regulations 64, 65 and 67 to 70 apply in relation to a member (M)—
(a)in respect of whom an additional pension election is accepted; and
(b)whose notice of election states that contributions are to be paid by periodic payments during the contributions payment period.
(2) M's employing authority must—
(a)deduct the contributions from M's pensionable earnings; and
(b)pay them to the scheme manager no later than the 19th day of the month following that in which the earnings were paid to M.
(3) The contributions payment period must—
(a)be a whole number of years;
(b)begin with the pay period in respect of which the first contribution is paid;
(c)be not less than one year nor more than 20 years; and
(d)end before M reaches normal pension age.
(4) If the scheme manager re-determines the amount of the periodic payment during the contributions payment period, the re-determined amount must be repaid from—
(a)the beginning of the next scheme year, or
(b)such later date as the scheme manager determines.