(a) The jury commissioner may, with the consent in writing of the presiding justice, from time to time appoint and remove an associate jury commissioner, an assistant jury commissioner, and such clerks, stenographers, and investigators, and may incur such office and traveling expenses, as shall be necessary for the proper discharge of the duties of his or her office.
(b) The associate jury commissioner and the assistant jury commissioner may discharge all of the duties of the jury commissioner appointing them and an act done by them shall have the same force and effect as though done by the jury commissioner.