Such department shall consist of one director of court services and such assistants, deputies, probation officers, caseworkers, investigators, clerical help and other employees as the judges of said court shall from time to time appoint.
Such director of court services, assistants, deputies, officers, caseworkers, investigators, clerical help, and other employees shall be appointed and removed by the judges of the district court in any such county. They may be appointed either for a definite period of time or for an indeterminate period, in the discretion of the court. The salaries of all such persons shall be fixed by the judges of said court.
The judges may by order determine the necessary qualifications of applicants for positions in the department and may, in their discretion, provide that applicants shall undergo certain tests as to their qualifications.
The director of court services shall have general supervision of such department, subject to the direction of the judges of the court. The court may divide the duties of the department into branches or divisions, and appoint from such probation officers, investigators or other employees the heads of such branches or divisions. A juvenile division may be established distinct from all other divisions of such department.