Self employed

Even though the income is related to your wife's main job, it is not subject to self-employment tax. To enter a Form 1099-NEC that is not for self-employment:

Open your return and go to Federal >> Wages & Income >> Other Common Income >> Income from Form 1099-NEC. Click Start/Update.

Or enter 1099-nec in the Search box located in the upper right of the program screen.  Click on Jump to 1099-nec.

1. On the screen Did you get a 1099-NEC?, click on Yes
2. On the screen Do You Want to Enter Your 1099-NECs Now?, click on Add a 1099-NEC
3. On the screen Let's get the info from your 1099-NEC, enter your information and click Continue
4. On the screen Describe the reason for this 1099-NEC, enter a reason and click Continue
5. On the screen Does one of these uncommon situations apply? Select This is not money earned as an employee or self-employed individual, it is from a sporadic activity or hobby and click Continue.

These entries will report the income on Schedule 1 Line 8z Other Income. The total from Schedule 1 Line 10 flows to Form 1040 Line 8 as ordinary income.