The Minister may make regulations to provide for—
(a) treating persons employed by or under the Crown in like manner as if such persons were insured persons in the employment of a private person;
(b) classifying any employment under the Crown as being or not being insurable employment for the purposes of this Act;
(c) applying the provisions of this Act relating to contributions and benefits to any insurable employment classified under paragraph (b);
(d) matters, necessary for the effective implementation of section 6(9) of the Pensions Act.