If you need to make an extra payment to an employee after you've completed the payroll and sent the FPS. You can do a supplementary pay run to put through additional payments and submit a correction to the FPS with the new values.
Things to consider;
You can't add a new employee or process leavers in a supplementary run.
Employees who are on the payroll but were not processed in the initial payroll run can be included in a supplemental run.
To run a supplementary run, follow the steps below.
Take a backup of your database.
Click Payroll, and then click Lock Main Pay Run.
Select the required frequency, then click Next.
If the not processed report appears, click Next.
Click Process, then click Close.
Click Supplementary Pay Run.
Select the process checkbox for any employees you wish to process.
Amend or add any pay elements required.
Click Save and Process.
📌Note: Tax and NI from the main pay run are taken into account in the supplementary pay run, to ensure no overpayment is made.
Click Payroll, then click Close Supplemental Pay Run.
Click Process, then click Close.
You can then either open another supplementary run by repeating these steps or close the period.