As used in this Subchapter 6, a campus auxiliary organization, hereinafter called an “auxiliary” organization, is an organization which is (a) included in the list of auxiliary organizations in good standing maintained by the Chancellor pursuant to Section 42406, infra, and/or (b) which is an organization specified in Education Code Section 89900, which is any organization using the name of the State or a campus, or representing an official relationship with a campus, or in which any campus official participates as a director as part of his official position. The term, “auxiliary organization” as used herein, includes student body organizations and other student groups which are subject to the provisions of Educatio Code Section 89900; provided, that other than student body organizations, all student clubs, societies, sororities, fraternities and similar student groups not operating any commercial activity at the campus, are not subject to the further provisions of this Article, and may represent an official relationship to the campus and may use its facilities, subject to such policies and conditions as the Board of Trustees and the campus president may from time to time establish.