When the program is open, the Classroom Capture icon in the Windows taskbar shows the status of the recording.
For example, the below figure shows the taskbar icon with a red dot, indicating that Classroom Capture is currently recording.
Pausing the capture changes the taskbar icon to show a pause symbol, as shown in the below figure.
If there is a Device Monitor light installed on the podium PC, it will also indicate the current status of the capture.
If you are not seeing the capture status indicated in the Windows taskbar as described here, right-click the taskbar and check the taskbar Properties.
Be sure the Use small icons checkbox is NOT checked, as shown in the below figure. Small icons do not allow for the "overlay" graphics (pause sign or red dot) that Echo uses for the status indicator.