(1) If a defendant has been ordered to make an interim payment, or has voluntarily made an interim payment, the court may make an order to adjust the interim payment.
(2) The court may in particular —
(a) order a defendant to reimburse, either in whole or in part, another defendant who has made an interim payment;
(b) order all or part of the interim payment to be repaid; and
(c) vary or discharge the order for interim payment.
(3) The court may make an order under this rule —
(a) on an application by a party made at any time; or
(b) without an application by a party, if it makes the order when it disposes of the claim or any part of it.