Advanced PDF Form With Date Autofill Needed And Hour Calcuation

Here is the sample: [login to view URL] If the date is entered at the top for "Pay period ending" can it auto-fill the other dates? Can you do error checking for the clockin and clock out time? I needs to accept only H:MM or HH:MM format and the out time can't be before the in time The Hours should be auto calculated and filled in based on the start and end time. There should be error checking on the clockout time to make sure its not after 23:59PM and not before the start time.