9. The [State Government] may make rules consistent with this Act-
(1) for the form and conditions of licences on which prisoners may be released ;
(2) for the appointment of Government officer, the recognition of institutions and societies referred to in section 2;
(3) for defining the powers and duties of Government officers, institutions or persons, under whose authority or supervision, conditionally released prisoners may be kept ;
(4) for defining the classes of offenders who may be conditionally released, and the periods of imprisonment after which they may be so released;
(5) for prescribing the manner in which an order of revocation of a licence shall be served on the person whose licence is revoked;
(6) generally for carrying into effect all the purposes of this Act.