The Registrar may, for the purposes of this Act—
(a) summon witnesses;
(b) receive written or oral evidence on oath or affirmation;
(c) require the production of documents or articles; and
(d) award costs against a party to proceedings brought before the Registrar; and
(e) notify, as he or she considers fit, any person of any matter that, in his or her opinion, should be brought to the person's notice.