10. Unless he is that party’s spouse or a lawyer, the mandatary representing a party, whether for the filing of an application or motion or at the hearing, must present the written mandate which he holds, either at the time the application or motion is filed or at the hearing, depending on the nature of the mandate.
The mandate may be filed subsequently, even in review, provided the commissioner is satisfied that a mandate existed at the time the mandatary acted on behalf of his mandator.
Decision 92-11-23, s. 10.