The presiding officer, upon the officer's own initiative or upon motion, may consolidate for hearing or for other purposes or may contemporaneously consider two or more proceedings that involve substantially the same parties, or issues that are the same or closely related, if the officer finds that the consolidation or contemporaneous hearing will be conducive to the proper dispatch of the business of the department and to the ends of justice and will not unduly delay the proceedings.
Haw. Code R. § 5-1-45