We also used this system to track all employee vacation, sick leave allotments and usage. We would allocate an amount each year and every time the employee booked a vacation day the system would reduce the balance. This would also prevent an employee from booking too many vacation or sick days. The system provided great reports and IT was able to integrate it to our ERP system. This also helped with vacation accrual year end reporting. Reach out to me if you want to ask me specific questions.