How do I process long service leave in QBO payroll

Hi sonyaj, 

Just so I can assist further are you looking to find out how to add in Long Service Leave to a pay run? You can see the steps by clicking here.

If you are looking to learn how to adjust an employee's Long Service Leave in a pay run, you can see the steps by clicking here.

Furthermore if you are looking how to adjust an Employee's accrual of leave within a pay run, you can see the steps by clicking here or here on how to correct the leave settings for Long Service Leave if you have a calculation discrepancy because of the businesses state/territory.

Hope this helps, 

-Steven