Event-based schedules poll the event-source continuously. But you may want it to be "live" only at certain times. Operational Hours allow you to setup times during which an event is will trigger an Event-Based schedule.
System - Operation Hours
Go to System.
Select Operation Hours.
Operational Hours allow you to setup times during which an event is allowed to trigger an Event-Based schedule. If an event occurs during operational hours, the scheduled tasks will execute. For example, if you only wanted PBRS to monitor your database in the overnight hours, then this option would be quite useful.
Add Operational Hours
Once you have specified the hours, click OK to save them.
Select the operational hours and click Edit to edit existing operational hours.