(1) A person shall not be entitled to enforce the payment of any arrears due under an order made by virtue of section 21, 22(1), or 26(6) without the leave of the Court, if those arrears became due more than 12 months before the proceedings to enforce the payment of them are begun.
(2) On an application for the grant of leave under this section the Court may refuse leave, or may grant leave subject to such restrictions and conditions (including conditions as to the allowing of time for payment or the making of payment by instalments) as the Court thinks proper, or may remit the payment of such arrears or of any part thereof.
(3) An application for the grant of leave under this section shall be made in such manner as may be prescribed by rules of Court.