In addition to the powers conferred on the Commission under section 12, the Commission may, in relation to any matter brought before it—
(a) make provisional or interim orders or awards relating to the matters or part thereof, or give directions under the hearing or determination;
(b) dismiss any matter or part of a matter or refrain from further hearing or from determining the matter or part thereof if it appears that the matter or part thereof is trivial or vexatious or that further proceedings are not necessary or desirable in the public interest;
(c) order any party to pay costs and expenses, including expenses of witnesses, as are specified in the order;
(d) generally give all such directions and do all such things as are necessary or expedient for the expeditious and just hearing and determination of the matter.