The commission shall prescribe the form of the license. Each license shall have placed thereon the seal of the commission. The license of each affiliated licensee shall be delivered or mailed to the real estate broker for whom the licensee is acting and shall be kept in the custody and control of such broker. It shall be the duty of each broker to display the broker's own license conspicuously and those of the affiliated licensees in such broker's place of business. The commission shall prepare and deliver a pocket card certifying that the person whose name appears thereon is a licensee.