(1) The chief psychiatrist may by instrument appoint the following to be an authorised officer for the purposes of this Part—
(a) a person employed under Part 3 of the Public Administration Act 2004 ;
(b) a person with whom the Secretary has entered into an agreement under section 143.
(2) The chief psychiatrist must not appoint a person to be an authorised officer under this section unless the chief psychiatrist is satisfied that the person has the appropriate knowledge and experience to perform the duties and functions of an authorised officer.
(3) The chief psychiatrist may give a direction to an authorised officer in relation to the performance of the authorised officer's functions or duties or the exercise of the authorised officer's powers under this Act or the regulations.