To the extent there is no conflict of interest between the representative and the person represented or among those being represented with respect to a particular question or dispute:
1. Conservator. A conservator may represent and bind the estate that the conservator controls;
2. Guardian. A guardian may represent and bind the ward if a conservator of the ward's estate has not been appointed;
3. Agent. An agent having authority to act with respect to the particular question or dispute may represent and bind the principal;
4. Trustee. A trustee may represent and bind the beneficiaries of the trust;
5. Personal representative. A personal representative of a decedent's estate may represent and bind persons interested in the estate; and
6. Parent. A parent may represent and bind the parent's minor or unborn child if a conservator or guardian for the child has not been appointed.