beside the scheduled scan. At the bottom of the page, check (or uncheck) the Deactivate this schedule check box and then click OK. Later you can reactivate the schedule.You can deactivate scheduled scans so they no longer are launched automatically by the service. When a scheduled scan is deactivated, the scan title and next launch date appear grayed out and when you place your cursor over the scan title you will see the message "Deactivated Scheduled Scan".
Go to Network > Scheduled Scans (or Web Application Scans). Click the edit icon beside the scheduled scan. At the bottom of the page, check (or uncheck) the Deactivate this schedule check box and then click OK. Later you can reactivate the schedule.