s 7 Supplemental
(1) The Minister shall have power by order to provide that this Act shall have effect— (a) as if . for the reference to twenty-one hours in . section ._ _ 4(9), or (b) as if for each of the references to twenty-one hours in paragraphs 3 and 4 of Schedule 1 and paragraph 3(3) of Schedule 2, there were substituted a reference to such other number of hours less than twenty-one as may be specified in the order. (2) Orders under the foregoing subsection may specify different numbers of hours for the purposes of paragraphs (a) and (b), and an order under paragraph (6) shall affect the operation of Schedule 1 to this Act as respects periods before the order takes effect for the purposes of sections 1 and 2 of this Act, as well as respects later periods. (3) An order under this section may contain such transitional and other supplemental and incidental provisions as appear to the Minister to be expedient, and may be varied or revoked by a further order so made. An order under this section shall be made by statutory instrument, but no such order shall be made unless a draft of the order has been laid before Parliament and approved by a resolution of each House.