Go to 'Employees'

Go to the employee who needs their time off on the schedule

Go to the 'Time Off' tab

Select the record you need to appear on the schedule or log a new time off

Press 'Edit' if an existing record, fill in as necessary if it is a new record

At the bottom of the record, it will say 'Show on Schedule'

Select 'Yes'

Press 'Approve & Save'