23Supplementary provisions with respect to variation and revocation of orders
(1)Provision may be made by rules as to the persons who are to be made respondents on an application for the variation or revocation of an order under section 14(3), 20 or 21 of this Act; and if on an application under section 20 of this Act there are two or more respondents, the powers of the court under section 55(1) of the Magistrates' Courts Act 1952 shall be deemed to include power, whatever adjudication the court makes on the application, to order any of the parties to pay the whole or part of the costs of all or any of the other parties.
(2)The powers of a magistrates' court to revoke, revive or vary an order for the periodical payment of money under section 53 of the Magistrates' Courts Act 1952 and to suspend or rescind certain other orders under section 54(2) of that Act shall not apply in relation to an order made under this Part of this Act.