(a) A master who serves a single court serves at the will of the judge of that court.
(b) The employment of a master who serves two courts may be terminated by either of the judges of those courts.
(c) The employment of a master who serves more than two courts may be terminated by a majority of the judges of those courts.
(d) To terminate a master's employment, the appropriate judges must sign a written order of termination. The order must state:
(1) the master's name and state bar identification number;
(2) each court ordering termination; and
(3) the date the master's employment ends.