Cal. Gov. Code § 54953.7

Notwithstanding any other provision of law, legislative bodies of local agencies may impose requirements upon themselves which allow greater access to their meetings than prescribed by the minimal standards set forth in this chapter. In addition thereto, an elected legislative body of a local agency may impose such requirements on those appointed legislative bodies of the local agency of which all or a majority of the members are appointed by or under the authority of the elected legislative body.