148U. (1) Subject to section 148T(2) and (4) the Board shall, following receipt of a complaint and may, of its own volition, cause an investigation to be carried out and decided upon under this Part and for that purpose shall appoint an authorised officer and a decision maker.

(2) The Board may appoint more than one authorised officer to carry out an investigation but, in any such case, the investigation report concerned shall be prepared jointly by the authorised officers so appointed and the other provisions of this Part shall, with all necessary modifications, be construed accordingly.

(3) The terms of appointment of an authorised officer may define the scope of the investigation to be carried out by the authorised officer, whether as respects the matters or the period to which it is to extend or otherwise, and, in particular, may limit the investigation to matters connected with particular circumstances.]