In any court where more than one probation or parole officer or other court services staff has been appointed under the provisions of this law, one or more probation or parole officers may be designated to serve in a supervisory position, other than court services unit director, by the Director, if it is a state-operated court services unit, or by the local governing body, if it is a locally operated court services unit. The transfer, demotion, or separation of supervisory officers, other than court services unit directors, of state court service units shall be under the authority of the Director and shall be only for good cause shown, after consulting with the judge or judges of that juvenile and domestic relations district court, and in accordance with the Virginia Personnel Act (§ 2.2-2900 et seq.). The transfer, demotion or separation of supervisory officers of local court service units shall be under the authority of the local governing body and shall be only for good cause shown, after consulting with the judge or judges of that juvenile and domestic relations district court and after due notice and opportunity to be heard.