Wasn't sure what to put in the title, but...
I while ago I came across a website connected to an unknown cache. You, as CO, could decide how many cachers who needed to be in the same (given" area at teh same time. All have to write in a password to connect to the site in order to get the coordinates for the final. Problem is that I cannot find this site again.
I'm not talking about the mysteries like "Team International" in London...
Hope I didn't write too bad for you to understand!?!
Thanks for your answer! :-)