Iowa Code § 633.76: Two or more fiduciaries — exercise of powers.

Where there are two or more fiduciaries, they shall all concur in the exercise of the powers conferred upon them, unless the instrument creating the estate provides to the contrary. In the event that the fiduciaries cannot concur upon the exercise of any power, any one of the fiduciaries may apply to the court for directions, and the court shall make such orders as it may deem to be to the best interests of the estate.