(2)The power of a Northern Ireland department to make regulations under Part 3 (trading schemes) or Schedule 6 (charges for [F1single use carrier bags][F1carrier bags])—

(a)is exercisable by statutory instrument if the instrument also contains regulations under that Part or Schedule made or to be made by another national authority, and

(b)otherwise, is exercisable by statutory rule for the purposes of the Statutory Rules (Northern Ireland) Order 1979 (S.I. 1979/1573 (N.I. 12)).

(3)An order or regulations under this Act may—

(a)make different provision for different cases or circumstances,

(b)include supplementary, incidental and consequential provision, and

(c)make transitional provision and savings.

(4)Any provision that may be made by order under this Act may be made by regulations.

(5)Any provision that may be made by regulations under this Act may be made by order.