Auto-calculate holiday pay on payslips for salaried employees

When adding holiday dates on the calendar for salaried employees, it would be good if this automatically calculated the holiday pay and remaining salary on the pay run. Or if you are able to just input how many days holiday they have had in that month's payroll, perhaps that could automatically calculate the holiday pay/salary on the payroll? Currently we have to manually work it all out ourselves which takes a lot of time.

I would echo this request for company sick pay where employees get paid as normal when off sick but it still needs to be broken down on the payslip.