Evidence
23.—(1)  A tribunal is not to be bound by the rules of evidence but may inform itself on any matter in such manner as the tribunal thinks fit.
(2)  Evidence tendered to a tribunal by or on behalf of a party to any proceedings need not be given on oath but the tribunal may, at any stage of the proceedings, require that such evidence or any part of it be given on oath whether orally or in writing.
(3)  For the purposes of subsection (2), a tribunal judge is empowered to administer an oath.
(4)  A tribunal may require any written evidence given in the proceedings before the tribunal to be verified by statutory declaration.