Code of Civil Procedure § 491.140
ARTICLE 1. Examination of Third Person
(a) If a corporation, partnership, association, trust, or other organization is served with an order to appear for an examination, it shall designate to appear and be examined one or more officers, directors, managing agents, or other persons who are familiar with its property and debts.
(b) If the order to appear for an examination requires the appearance of a specified individual, the specified individual shall appear for the examination and may be accompanied by one or more officers, directors, managing agents, or other persons familiar with the property and debts of the corporation, partnership, association, trust, or other organization.
(c) If the order to appear for the examination does not require the appearance of a specified individual, the order shall advise the corporation, partnership, association, trust, or other organization of its duty to make a designation under subdivision (a).
(d) A corporation, partnership, association, trust, or other organization, whether or not a party, may appear at an examination through any authorized officer, director, or employee, whether or not the person is an attorney.