Haw. Rev. Stat. § 304A-2004: Special and revolving funds; expenditures in excess of appropriations.

In any fiscal year if the amount of revenues deposited into a special or revolving fund of the university exceeds the amount appropriated from that fund for that year, the president may approve expenditures in excess of the amount appropriated, up to the amount by which revenues for that fund exceed the appropriations from that fund for a fiscal year.