(1) On a review under this part—
(a) the procedure to be followed is, subject to this Act, within the discretion of the commissioner; and
(b) proceedings are to be conducted with as little formality and technicality, and with as much expedition, as the requirements of this Act and a proper consideration of the matters before the commissioner permits; and
(c) the commissioner is not bound by the rules of evidence and may inform himself or herself on any matter in any way the commissioner considers appropriate.
(2) The commissioner may, during a review, give directions as to the procedure to be followed on the review.