(1) In addition to the hearings specifically provided for by this act, the commission may conduct such other hearings as may be required or expedient in the administration of the powers and duties conferred upon it by this act.
(2) The commission shall fix the time and place of all hearings and shall serve notice of the hearing not less than ten (10) days before the time set for the hearing, unless the commission finds that public necessity requires that the hearing be held at an earlier date.
(3) At the time fixed for any hearing before the commission, a commissioner, or examiner, or the time to which any hearing may have been continued, the complainant and the person or corporation complained of shall be entitled in person or by attorney to be heard and to introduce evidence and to examine and cross-examine witnesses.