Choose the Start condition button at the top of the Define Background Job screen.
Choose the button at the top of the Start Time screen for the type of start condition you want to use ( Immediate, Date/Time, After job, After event, or At operation mode) and complete the start time definition in the screen that appears.
For the job to repeat, check the Periodic job box at the bottom of the Start Time screen and choose the Period values button below it to define the frequency of repetition (hourly, daily, weekly, monthly, or another specific time-related period). Then choose the Save button in the Period values screen to accept the periodicity and return to the Start Time screen.
Once you've completed specifying the job start conditions, choose the Save button at the bottom of the Start Time screen to return to the Define Background Job screen.