After you file

You enter yours the same way.  When you start entering a W2 or 1099 form it will ask who it is for.   When you started after you entered his name and ssn did you pick married and filing Joint then enter your name and birthdate etc?  

To add a  W2 just type w2 (small W)  in the search box at the top of your return and click on Jump To the W2

 

OR  To Add a W2 enter it under

Federal Taxes on the left side

Wages & Income  

Then Wages and Salaries- Click the Start or Update button

 

Then if you are married you should have 2 buttons...Add w-2 for (taxpayer name) and Add w-2 for (spouse name). Click on the correct button to add a W-2.