Wyo. Stat. § 4-10-808: Powers to direct.

(a) While a trust is revocable, the trustee may follow a written direction of the settlor that is contrary to the terms of the trust.

(b) If the terms of a trust confer upon a person other than the settlor of a revocable trust power to direct certain actions of the trustee, the trustee shall act in accordance with an exercise of the power.

(c) The terms of a trust may confer upon a trustee or other person, as provided in article 7 of this act, a power to direct the modification or termination of the trust.

(d) A person, other than a beneficiary, who holds a power to direct is a fiduciary who, as such, is required to act in good faith with regard to the purposes of the trust and the interests of the beneficiaries. The holder of a power to direct is liable for any loss that results from breach of a fiduciary duty with respect to the holder's power.