Can you create a notification for when ALL units have entered or left a geofence?

No, but you can create a notification, that moves your devices to a group, when they enter or leave the geofence. Then under the Monitoring tab, you can easily view what vehicles are in those groups.

Save & Share Cart
Your Shopping Cart will be saved and you'll be given a link. You, or anyone with the link, can use it to retrieve your Cart at any time.
Back Save & Share Cart
Your Shopping Cart will be saved with Product pictures and information, and Cart Totals. Then send it to yourself, or a friend, with a link to retrieve it at any time.
Your cart email sent successfully :)