...
All blackout windows are viewed and modified in the menu under Administration → Blackout Windows.
To create a Blackout Window, click +Create. Then select the environment that you wish to blackout. Once that is selected, an option to specify only a certain target group will appear to the right.
...
Quartz Cron Expressions can be designed and tested using the FlexDeploy UI, but if you would like a more powerful tool, https://www.freeformatter.com/cron-expression-generator-quartz.html is a great resource.
Historical Blackout Windows can be viewed in the Blackout Window History Report.
...