Stan has Arlo security cameras around his home and several IOT devices around his home. But all his devices go off and warn him if there's movement on one camera, but not the rest. Leo suspects that your other cameras haven't had the notification enabled. ScooterX in the chatroom says that the Arlo cameras linked to his Echo need the skill to do it. Check this technote. He will need to go into his Alexa app and discover all the cameras. Once it knows about them, it'll announce them.