SM36 - ABAP Batch Job Scheduling

Hi,

I have to create a batch Job and schedule it to run everyday from 8 am to 8 pm.

How can using SM36 I schedule this job? While using SM36 I can select either hourly or daily but not both at the same time.

Does selecting periodic job check box by default sets it to daily?

Also how do I restrict it to not run after 8 PM daily?

Your inputs will be appreciated.

Thanks

Sharad