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) A guardian of the property may represent and bind the estate that the guardian of the property controls.
(2) An agent having authority to act with respect to the particular question or dispute may represent and bind the principal.
(3) A trustee may represent and bind the beneficiaries of the trust.
(4) A personal representative of a decedent’s estate may represent and bind persons interested in the estate.
(5) A parent may represent and bind the parent’s unborn child, or the parent’s minor child if a guardian of the property for the minor child has not been appointed.