(1) More than one executor perform the duties of the office jointly; in the case of a difference in opinion, the probate court decides. If one of them ceases to be involved, the other executors are to perform the duties of the office alone. The testator may give different directions.
(2) Each executor is entitled to take any measures, without the approval of the other executors, that are necessary to preserve an object of the estate that is subject to their joint administration.