If it's a W-2 you need to add for your spouse, you can use the steps below to do so. If you need to add another type of income, please leave a comment and I can adjust the answer for you.

To Add a Spouse's W-2:

1. Go to "Federal Taxes" at the top of the screen

2. Select the "Wages & Income" sub-tab

3. Select "Start/Revisit" next to "Wages and Salaries"

4. Select "+Add a W-2 for Spouse" in blue