This example shows you how to create a 4-person rotation that is restricted between 00:00-10:00 with a shift length of 5 hours. This schedule is complex to create, but you can do it using the on-call schedule setup.
To create this schedule:
Add all four users to the schedule.
Create a custom rotation with a shift length of 12 hours. Make sure you restrict the times from 00:00-10:00 every day.
Set the schedule start time to be 17:00 (-7 hours from midnight). If you do not change the schedule starting point, the users will not be on call for the five hour shifts.