This panel is enabled only if Schedule type is set to Recurring.
Occurs once at
You can select this option to specify an exact time of day to run the job.
Alternatively, you can select this option to specify the frequency in terms of the number of hours (1-24), minutes (1-60), or seconds (1-60) along with the exact starting and ending times (Starting at and Ending at). The default times cover the entire day, starting at the time when you began creating this schedule.