Adding work time to an on-call shift
You can add concurrent or adjacent work
time to an on-call shift, but you cannot add work time that would cause a gap with the
on-call time.
For example, an employee is scheduled on-call from 7:00 to 19:00 and is called into work. You can add work time from 13:00 to 17:00 or 19:00 to 21:00, but you cannot add work time from 20:00 to 23:00.