1. GO to Employee Attendance.
2. Click on Manage Attendance tab >> Manage Leave >> Mark Leave.
3. Add Date >> If you are going to mark one day leave Add same date.
4. Select Employee >> Select Leave type >> Select Leave (Also Select Leave Period if you are selecting 'Half' as Leave type).
5. Select Yes (if leave is paid) or No (if leave is not paid).
6. Add Detail if yon want.
7. Save & Close.
Note: 'You can select many Employees at a time for one day leave by clicking on red colored plus sign'