What is "Treat In/Out Time before Check Out Cut Off Hour as last days' attendance records when import"?
During Attendance Import, any time before that Check-Out Cut-Off Hour will be treated as previous day attendance,
e.g. 2017/05/07 03:15 will be treated as 2017/05/06 27:15
Which is good for the overnight shift. So that the check-out time counted to the last work day.