Hi, this may have been asked, I did a search but nothing pulled up. When I was at the Expo in Providence, brought up how do you know which controller is in charge of the airspace. Example, say you have 2 Atlanta Center Controllers on, how do you know which one is controlling which space. At the Expo last year they said that they were working on that. Has that been added on the Navigraph charts? If so, how do you find it/use that…thanks in advance. Respectfully, Bill