The granting of a license or permit to any person operating, conducting or carrying on any trade, profession, business or privilege which contains within itself, or is composed of trades, professions, businesses or privileges which are required by this code to be licensed, shall not relieve the person to whom such license or permit is granted from the necessity of securing individual licenses or permits for each such trade, profession, business or privilege.
(1990 Code, § 7.2)