You can now customize the Working Hour for the Employee in the Timesheet by going to HR Lounge > Timesheets > Settings.
1. Click on Employee Timesheet Settings.
2. Under Approval workflow & Work Hours, look for Select customization and click on Work Hours.
3. Insert the number of Working Hours under Create custom work hours.
4. Tick the checkbox in front of the employee name.
5. Click on + Apply work hours to save the changes.
By doing so, when your employee tracked the total number of hours spent more than the working hours set, Overtime will be calculated.