Business & farm

After selecting Edit from that self-employed work summary menu, it should take you to a page that looks like this (below); on that screen, you would scroll down to income and select the Add income... button that I have highlighted yellow on my sample business to add a 1099-NEC. If not the below page, then where does it redirect you to - does the page have a heading title?

A few options from there, 

• If the above page is not loading correctly, you can start troubleshooting first by clearing your browser's cookies and cache, and logging back into TurboTax Online. Then, navigate back to Federal > Wages & Income > Self-employment income > Your 2025 self-employed work summary > Edit (or click the 1099-NEC jump-to link here)
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• If the page still does not load correctly (as in my image above), you can try logging back in to TurboTax Online from a different browser to see if your navigation and search begins working more smoothly. For example, if you're using Google Chrome, you could try Mozilla Firefox or Microsoft Edge instead (and vice versa). 

• Next, try just using the 1099-NEC jump-to link from here (click) - when I tested it, I was able to begin entering a new 1099-NEC, and to assign the form to an existing line of work from the drop-down menu on the following screen. Try this methodology and see if you are able to enter a new 1099-NEC, and then add it to your existing line of work. 
   
• If the above methods all fail, you would certainly be able to delete the original line of work, then add your 1099-NEC income while creating a "new" line of work with all of the original details. You can tag me with @ my username for more options if you would rather not delete existing input.