Ron has a bunch of Echos all around his house but he can't use the intercom feature. Leo says he'll need to use the command "Drop in." He'll have to be sure they're enabled on each Echo and choose who can drop in as well. That's done in the Echo app. Leo says he'll need to sign up for Echo's calling and messaging as well, which is also in the app. His contact list will not sync with Echo, either. Leo says he'll have to sync his contacts to Google and then log into Google through the app.