Navigation:  Monitoring > Start and Stop

To start monitoring by the camera manually, select the camera in the grid, and click "Start Monitoring" button, which is located on the toolbar:

The monitoring will begin instantly by default, or after delay - if you click on arrow, and choose an item in drop-down menu.

Similarly, you need to click the same button again to turn off detection:

The monitoring will be stopped on selected camera by default. Or you can stop on all cameras - if you click the arrow, and choose "Stop All Detectors and Timers" in drop-down menu.