How do I add this one-time bonus properly to Quickbooks payroll

This is how to handle employee bonus in QuickBooks Payroll. You will first need to add a Bonus type under the employee profile and then you run either just a Bonus check alone or the regular check with the Bonus amount. You will need to take the following steps to process the bonus check:

To set up Bonus as “Additional pay” type to the name of the employee:

Go to Employees Center.
Select the name of the employee from the Employee list.
Under Employee details, click “Pay” the pencil icon.
Under question number three, click “Pay” the pencil icon again.
Check the “Bonus” box.
Click Done.
Click Done.

To run the Bonus check alone:

Go to Employees Center.
Next to the Run payroll button, click the drop-down arrow.
Click Bonus only (at the upper right corner).
Select As net pay or As gross pay.
Click Continue.
Enter the Pay date.
Enter the Bonus amount.
To pay by paper check but not direct deposit, click the lightning icon, then switch “pay by” to paper check from direct deposit.
Choose Bank account.
Click Preview payroll.
It should also calculate employee taxes for that bonus amount.
Click Submit payroll.
Enter check number to print.
Select Print paychecks button to print.
Click Finish payroll.