User 1 gets a call and if he doesn't pick it, the cover path will roll it over to User 2's extension. User 1 is still able to conference into the call even after it rolls up to User 2. Is there a way to change it so that User 1 isn't able to conference on after User 2 picks it up? I checked both extensions for a bridge configuration, but there is none. I'm puzzled on this one. Any ideas?