(1) More than one guardian conduct the guardianship jointly. In the case of a difference of opinion, the family court decides, unless otherwise provided upon the appointment.
(2) The family court may allocate the conducting of the guardianship between more than one guardian according to specified spheres of responsibility. Within the sphere of responsibility allocated to them, each guardian conducts the guardianship independently.
(3) Provisions which the father or the mother has made for the determination of differences of opinion between the guardians named by them and for the distribution of the transactions among them in accordance with section 1777 are to be followed by the family court except to the extent that pursuing them would endanger the interest of the ward.