The Selected Day tab allows you to specify settings for the selected day that differ from the settings specified in the Default Daily Schedule tab. In order for the Selected Day tab to be enabled, you must click a day to select it and you must select the Override default settings check box.
The drop-down list allows you to select Time Range or Specific Time. If you select Time Range, a Start Time box and an End Time box are displayed. Define the range of time in which you want your job or format to begin processing. If you select Specific Time, a Time box is displayed. Select the time at which you want the job or format to begin processing.
Specifying a Time Range and using the Once Per Day option will allow a scheduled process to run even if another process runs over its starting time, as long as the process is able to start within the specified range.