Exercise of statutory powers between passing and commencement of Acts

Where an Act is not to come into operation immediately on the passing thereof, and confers power to make any appointment, to make, grant or issue any instrument, including any statutory instrument, to give notices, to prescribe forms and to do any other thing for the purposes of the Act, that power may, unless the contrary intention appears, be exercised at any time after the passing of the Act so far as may be necessary or expedient for the purpose of bringing the Act into operation at the commencement thereof: Provided that any instrument made under the power shall not, unless a contrary intention appears in the Act, or the contrary is necessary for bringing the Act into operation, come into operation until the Act itself comes into operation.