(1) A party who is a natural person;
(2) An officer or employee of a party which is not a natural person designated as its representative by its attorney;
(3) A person whose presence is shown by a party to be essential to the presentation of the party’s cause; or
(4) The victim in a criminal case. [1981 c.892 §56; 1987 c.2 §5; 2003 c.14 §20]