The chief of police shall be the commanding officer of the police reserve force. He shall have the authority to establish a training program, promulgate rules and regulations for the conduct of the police reserve force and its members, prescribe the proper uniform and supervise the performance of the duties of the police reserve force. The chief of police shall further have the authority to delegate supervisory authority over the police reserve to officers of the regular city police department, and to designate supervisory officers within the reserve, and to designate the members who shall act as supervisory officers. All rules and regulations governing the police reserve force must be approved by the director of civil defense.