The presiding officer, upon the presiding officer's own initiative or upon written motion, may consolidate for hearing two or more proceedings that involve related questions of fact or law or may separate matters in issue for hearing in two or more separate proceedings if the presiding officer finds that consolidation or separation will be conducive to the proper dispatch of the presiding officer's business, to the ends of justice, and will not unduly delay the proceedings.
Haw. Code R. § 15-219-30