When creating or modifying an existing event you can send a push notification (mobile notification) to the event recipients. This will alert them an event has been added to their schedule, there has been a change to an existing event, or there has been a cancellation.
The AMS will automatically prompt you when creating, updating, or cancelling an event with the option to "Add & Send". Choosing this option will send a notification. Choosing "Add Only" will not send a notification.