[Authorities and jurisdiction.

18. (1) The following shall be the authorities for the purposes of this Act, namely:—
         (a) the Initiating Officer;
         (b) the Approving Authority;
         (c) the Administrator; and
         (d) the Adjudicating Authority.
(2) The authorities shall exercise all or any of the powers and perform all or any of the functions conferred on, or, assigned, as the case may be, to it under this Act or in accordance with such rules as may be prescribed.]