Where an Act or a provision of an Act is expressed to come into operation on a day subsequent to the date of the passing of the Act, the following provisions apply:

(a) if the day on which the Act or the provision comes into operation is to be fixed or ascertained in a particular manner, the statutory instrument, act or thing whereby the day is fixed or ascertained may, subject to any restriction imposed by the Act, be made or done at any time after the passing of the Act;

(b) if, for the purposes of the Act or the provision, the Act confers a power to make a statutory instrument or do any act or thing, the making or doing of which is necessary or expedient to enable the Act or provision to have full force and effect immediately on its coming into operation, the power may, subject to any restriction imposed by the Act, be exercised at any time after the passing of the Act.