Circles are like conversations where members can send locations updates and alarms to each other.
After you created some Circles, please join one of the Circles from 'Circles' in order to receive alerts and shared location notifications from this circle in real time. 'Maps' will only show events happening in this circle.
You need to be inside the circle in order to send or receive real time notifications from other member. You can check what has been shared to the circle at any time (but only starting from the moment you were invited to it), by browsing the circle's log records history.