(1) These rules shall apply to all the employees of the Board except :-
(a) those who are on foreign service terms with the Board in whose case the terms and conditions of appointment and service agreed to between the Board and the lending organization would apply; and
(b) those paid from contingencies.
(2) Nothing in these rules shall operate to deprive an employee of any right or privilege to which he is entitled.
(a) by or under any law for the time being in force; or
(b) by the terms or conditions of service or any agreement, subsisting between such person and the Government; or
(c) by the terms or any agreement subsisting between him and the Board at the commencement of these rules.
4. Creation of posts and appointment thereto - The Board may create such posts and make appointments thereto, as may be necessary for the performance of its functions;
Provided that for creation of posts in Group A and Group B and appointment thereto, prior approval of the Central Government shall be obtained:
Provided further that for creation of Group A and Group B posts and appointment thereto on purely temporary and ad hoc basis prior approval of the Central Government shall not be necessary.