Strip clubs have a variety of configurations and staffing needs. Some clubs employ a host to emcee the show, in addition to a DJ. Hosts are more common in busier clubs or shifts, and during special, such as amateur night and featured acts. If the club charges a fee for entry, specialized personnel may work the door to collect the cover. A common practice is to employ young women, which are known in the industry as door girls, for this function. In certain areas, doormen working outside the strip club will act as "hype men" enticing people to enter and sample the show and services. The Block in Baltimore, Maryland has aggressive doormen stationed at nearly every entrance, only feet apart in a highly concentrated area of clubs. Broadway in San Francisco, California has fewer clubs clustered together, but practices similar activities with their doormen.