Hi there!
Allow me to share some information as to why the box is not available when entering prior payroll.
A possible reasons is that when you already run payroll.
If that's the case, editing or entering prior payroll information after that is currently unavailable. You need to reach out to our Payroll Support team for assistance. Please note that the process may take up to 14 business days.
For your reference, you can also check out this article for more information: Set up a prior payroll.
You're always welcome to comment below if you have additional concerns. I'm always here to assist.
