I have just the clarification that you're looking for.
I'd like to take a moment and thank jody125 for joining the thread and sharing this amazing insight. For the benefit of all, allow me to provide you the step-by-step process on how to create the paycheck for the back pay:
Select Workers in the left navigation menu.
Click Run payroll.
Choose the Pay schedule for this employee.
Select the employee you want to pay, and then click Create another check.
I hope this response finds you with a smile today. Let me know if there's anything else I can do for you, I want to make sure you're taken care of. Thanks for reaching out, wishing you and your business the best.