The Institution shall have the following staff: two associate directors, one of whom is a competent psychiatrist with at least 3 years of experience in the practice or teaching of psychiatry and one of whom is a competent behavioral scientist with at least 3 years of experience in the practice or teaching of the individual’s specialty in behavioral science; a warden; at least three additional psychiatrists or clinical psychologists; at least four State licensed certified social workers–clinical; and other professional and nonprofessional staff, as provided in the State budget. The associate directors shall assist primarily in discharging the diagnostic and remediation functions of the Institution. The warden shall assist primarily in discharging the custodial function of the Institution. The staff members of the Institution are entitled to compensation as provided in the State budget. Except as provided in paragraph (3) of this subsection or any other law, the staff members of the Institution are in the skilled service or professional service in the State Personnel Management System. With the approval of the Secretary, the Director shall appoint an individual to any position that the Secretary determines to be professional, including: each associate director; each social worker; each sociologist; each physician; and each psychologist. The Director and each individual appointed under paragraph (2)(i) of this subsection are in the executive service, in the management service, or a special appointment in the State Personnel Management System. The warden is the appointing authority for: correctional officers assigned to the Institution; and staff attached to the office of the warden.