This is for industry people.
You've seen content tagged with a location, or cameraperson, or editor. Here you can see the rest of the stuff they have been tagged in. Maybe book them/it.
Tagging ONLY works where they are a site member, so if you know people, locations, that serve the industry, tell them to join, they can be tagged even in existing content.
If you are in the industry and want to be tagged in your scenes, ask the creator to join and add them :-)