Haw. Rev. Stat. § 302A-1114

The department, from time to time, may appoint and remove such teachers, educational officers, and other personnel as may be necessary for carrying out the purposes of sections 302A-201, 302A-401 to 302A-410, 302A-1001 to 302A-1004, 302A-1101 to 302A-1122, 302A-1301 to 302A-1305, 302A-1401 to 302A-1403, and 302A-1503 to 302A-1506, and regulate their duties, powers, and responsibilities, when not otherwise provided by law.