Please do as follows to process the bonus into Other Pay using Excel Import:
Process the Normal Pay
Go to the Payroll module and click Pay Records.
Click Initialise to Initialise Normal Pay for the month.
Click Next and bring the employees over.
Retrieve Excel template
Go to the Core module and click Import.
Click Pay Element, select Retrieve Excel Template, and then Confirm.
Click Yes, Save the template on your desktop.
Enter the Bonus Amount, Pay Record Type (Normal Pay or Other Pay), Payroll Date, and click Save.
Import Excel template
Go to the Core module, and click Import.
Select Pay Element, click the 3 dotted buttons to select the excel file you saved earlier then click Import.