Hi lenawall03-gmail,
Welcome to Community! When setting up your QuickBooks Online Payroll, entering prior payroll information is key, in ensuring the associated forms are accurate. I would be glad to help!
If you haven't submitted payroll yet, you can follow the steps here, to enter an employees' payroll history. However, if you've already completed a pay run, you won't see this option. In this situation, I encourage you to call our QuickBooks Online Payroll specialists at 1-855-253-1536 from Monday to Friday between the hours of 9 AM and 8 PM EST. They'll be happy to work with you directly, and assist you further from their end.
Feel free to reach out again, if you have other questions. We would be happy to assist!