Hello, suzanne5.
I appreciate your reaching out for support here in the Community. I can show you how to make a change to an archived form.
There are just a few steps to access the archives. Here's how:
1. Click the Taxes tab in the left navigation bar.
2. Select Payroll Tax at the top of the page.
3. In the Forms section, choose View Archived Forms>> for the one you'd like to edit.
This article offers additional details on archived forms in QuickBooks Online: https://community.intuit.com/articles/1771699.
With this information you'll be able to edit archived forms before sending them in. Keep up the great work and please let me know if you have any other questions.