Milo uses short voice notifications to tell everyone in the group the name of the Milo who just dropped out of range or returned into range. This is the core reason for why each Milo has a name: to keep everyone easily informed. If you're the one who goes out of range, you'll be notified as well. When back in range, you don't need to do anything special - MiloNet™, our patented mesh network protocol, will actively work on reconnecting you with your group automatically when your signal is strong enough to do so.
With Milo version 8.0.0, you can choose the level of automatic notification, and even turn it off completely.