(1) The board may employ such employees, permanent and temporary, as it may require, and shall determine their qualifications, duties and compensation.
(2) The board may delegate to the chairman, to one or more supervisors, or to one or more agents or employees such powers and duties as it may deem proper.
(3) The supervisors shall provide for the execution of surety bonds for all employees and officers who are entrusted with funds or property.