10.—(1) A commission may, subject to this Act and the commission's rules and procedures, conduct its investigation in the manner that it considers appropriate in the circumstances of the case.

(2) In conducting an investigation, a commission shall, to the greatest possible extent consistent with its duties under this Act—

(a) seek the voluntary co-operation of persons whose evidence is desired by the commission in relation to any matter within its terms of reference, and

(b) facilitate such co-operation.

(3) Subsection (2) is not to be taken to limit in any way the powers given by sections 16, 17 and 28 to a commission or a member of a commission.

(4) A commission shall conduct its investigation as expeditiously as a proper consideration of the matter referred to the commission permits.