Select Projects from the menu.
Double click on an existing folder or application and click on the Configure tab.
Select a window and click the Edit button.
Optionally modify the Environment, Cron Expression or approval Group(s). You may also activate or inactivate the window. Click the Save button to save any changes.
For details on Cron Expression Syntax see http://www.quartz-scheduler.org/api/2.2.1/org/quartz/CronExpression.html.