(1)  This section applies to –

(a) the Minister; and

(b) the Secretary; and

(c) the Senior Practitioner; and

(d) .  .  .  .  .  .  .  .  

(e) any delegate of, or person authorised by, the Minister, the Secretary or the Senior Practitioner; and

(f) an authorised officer.

(2)  An action does not lie against any person to whom this section applies in respect of any act done in good faith and in the performance, or purported performance, of a function imposed, or the exercise, or purported exercise, of a power conferred, by or under this Act.