Zdoo 3.2+ has overtime management to record overtime. You can switch on/off overtime module in settings.
1. My Overtime
Go to "OA"->"Overtime". Click "Apply" and a window will pop out.
Fill in all the required fields and you will see your overtime request in "My Overtime". You can edit, delete and cancel your overtime application in the list.
2. You can view all the overtime in "All".
3. You can view all the overtime requests from your department in "Reviewed by me".
4. You can send an overtime request in "Attendance"->"My Attendance".