The adjutant general may have such necessary clerks, instructors, caretakers, employees, and laborers, within the limitations prescribed in appropriations made by the legislative assembly from time to time, as may be required. The adjutant general shall determine national guard membership requirements for employment. The expense of the adjutant general’s department, including the salary of the adjutant general and of the assistant adjutant general, clerkhire, the cost of furniture, light, fuel, and postage, and other office expenses, must be paid from the general fund by warrants drawn by the state auditor on the state treasurer upon the order of the governor.