Basically you look at the sign in time and block in/sign out time (+ 15 minutes) of your desired OT sequence. Go back 168 hrs (7 days) from the sign in time. If you can show a 30 hr block of time off within that 168 hrs, that’s what you input on the front end. And then do the same for the block in time of the sequence. If you can find a 30 hr block in the next 168 hrs, use that. It takes a little math but it’s not that hard.