California Code, Insurance Code - INS § 1758.83

(a) The manager at each location of a rental car company or a franchisee of a rental car company licensed pursuant to this article, or the direct supervisor of the company's endorsees at each location or region shall be an endorsee and shall be responsible for the supervision of each additional endorsee at that location or region. Each licensee shall identify the endorsee who is the manager or supervisor at each location for the purposes of this article.

(b) An endorsee may act on behalf and under the supervision of the car rental agent in matters relating to transacting insurance under that agent's license. The conduct of an endorsee of a car rental agent acting within the scope of employment or agency shall be deemed the conduct of the car rental agent for purposes of this article.