I believe you're referring to this article: How to modify your chart of accounts for your 1099-MISC and 1099-NEC filing.
You need to follow the steps in the article above if you file both a 1099-MISC and a 1099-NEC. It's determined by which types of boxes you select when you create your 1099s.
As for how to prepare this form in QuickBooks Desktop, see this article: Prepare and file 1099s with QuickBooks Desktop.
If you have other questions about the 1099 forms, refer to this article: What is a 1099 and do I need to file one?
I'll be around if you have other concerns. Place them in the comments below, and I'll take care of it.