Mental incompetent as trustee
20Where a power is vested in a mentally incompetent person in the character of trustee or guardian, or the consent of a mentally incompetent person to the exercise of a power is necessary in the like character, or as a check upon the undue exercise of the power, and it appears to the court to be expedient that the power should be exercised or the consent given, the committee of the estate, in the name and on behalf of the mentally incompetent person, under an order of the court made upon the application of any person interested, may exercise the power or give the consent in such manner as the order directs.