If you are filing as Married Fling Jointly, on every TurboTax section for entering income there is a selection for you to use that askes who the income or form is for, by Name.
In the W-2 section there are two buttons to add another W-2, by name.
Click on Federal on the left side of the online program screen
Click on Wages & Income
On the W-2 shown, click on Edit/Add
