It's nice to see you again here in the Community, @Eve2019.
You can consider a vendor as a 1099 filer if you paid him $600 or more in cash or checks in the year. However, to confirm if the vendor meets the IRS guidelines to be set as an independent contractor, I recommend consulting your accountant.
Once verified, you can start adding your vendor for 1099. Let's start with turning on the 1099-MISC feature.
Here's how:
- Select Edit and then Preferences.

- From the left press Tax: 1099.

- Click the Company Preferences tab.
- Next to Do you file 1099-MISC forms? hit Yes.
- Tick OK to save the preference.
For complete details about the set up, please refer to the QuickBooks Desktop for Windows section in this link: How do I set up a contractor?
You can also check this article about the mapping of accounts for your guide: QuickBooks Desktop behavior: 1099
Reach out to me if you have any other questions. I'm always up for assistance. Have a good one!