Hey Nikos,
The watchdog is a service which watches for both keyboard and mouse interaction. It talks to the worker to let it know if this is occuring. To use it, you enable the service and switch the lock on the worker to watch dog.
Please keep in mind that the watchdog service is designed for 32 bit versions of windows. If you are using 64 bit windows, it will cause issues with restarting the host. We will be notifying everyone once qube! supports 64bit windows. Until then, we recommend you use the calendar feature of the worker.
Thanks,
Anthony