Rule 11-615. Excluding witnesses.

At a party’s request, the court must order witnesses excluded so that they cannot hear other witnesses’ testimony, or the court may do so on its own. This rule does not authorize excluding A. a party who is a natural person, B. an officer or employee of a party that is not a natural person, after being designated as the party’s representative by its attorney, C. a person whose presence a party shows to be essential to presenting the party’s claim or defense, or D. a person authorized by law to be present.