While acting as the fiduciary of a trust, a family trust company or licensed family trust company:
1. Shall administer and manage the trust in accordance with the terms of the trust;
2. Shall administer and manage the trust in the interest of the beneficiaries of the trust;
3. Shall administer and manage the trust in accordance with the provisions of this chapter; and
4. May administer and manage the trust by the exercise of discretionary power of administration given to the fiduciary by the terms of the trust instrument.