User Guides.

Apart from the Geofences tab, you can see geofences on the map on other tabs, use them on the Monitoring tab, in notifications, reports and routes. Geofences can also be displayed in unit tooltips if the Presence in geofences option is enabled in the user settings.

Tab Usage
Monitoring

On the Monitoring tab, geofences can be displayed:

Notifications You can configure a notification of the Geofence type to receive it when a unit enters or leaves a geofence. You can configure this notification so that it is sent only when the unit speed or sensor readings are beyond the specified limits. 
Reports Geofences may be used in report address/location fields instead of addresses. This is useful if you have imported your customer locations as geofences, and prefer that they’re included in your reports. This is not enabled by default. You may request that your reports be adjusted to override addresses with Geofence names when available at the location
Routes You can use geofences as check points when creating routes.