Scenarios can be scheduled to run randomly within a timeframe. A Scenario will run at least once each day you select it to run. The time window the Scenario runs can also be set.
To add a schedule to a new Scenario, add the Scenario details, add attacks to the Scenario, and then open the Schedule Scenario pane. Click the "Schedule for later" toggle, select your options, and click "Schedule Scenario".
Scheduling a Scenario will not make it run immediately. It will only run on the schedule set.
The schedule on a draft Scenario will not run until the user selects "Schedule Scenario" on the Scenario creation and editing workflow.
Toggling the Scenario's schedule off will stop the Scenario's schedule from running.