Option to show a helper only outside of defined working hours

Currently there is option to hide a helper outside defined working hours (meaning show only during working hours) but what if I want to show a helper only during non-working hours and not show during working hours? This is useful when I want to show user helpers during working hours ONLY, hide them during non-working hours, show helpers during non-working hours ONLY. If user checks both working and non-working hours, that helper will show all the time