Implicity stets off an event for each type of a transmission.
The events vary from one manufacturer to the another.

* Absent from Reveal XT/DX.
You may change these default settings, especially if you are used to viewing scheduled transmissions (by default, no alerts are issued).
However, an alert (blue by default) is generated when a patient is without a scheduled transmission. You can then set up scheduled transmissions on the manufacturer's site.