Please use this script to custom critical events when the event occurs.
The script will check the event logs for every 15 min by default. Whenever the event happened, an alert will be generated.
This script as Custom Monitoring script. Please refer https://wiki.comodo.com/frontend/web/topic/how-to-use-custom-script-procedure-monitoring
And set the custom Monitoring condition duration as 15 min
This script run as a custom monitoring script