Nat 'n Tel

Before today, the newest item was Rise of the Teenage Mutant Ninja Turtles. We were able to put the 4 within The British Isles on our watchlist. Now that Earthcache Day is the newest item, how can check every now and then if any are in The British Isles other than the 4 we are tracking?

Can anyone let us know if you can change co-ords once a challenge has been set up - or had someone accept the challenge. As co-ords not spot on. Thanks Nat 'n Tel