I need to add a second W2 but I am not finding how to do that on the original W2 review page. Instructions say to click on add another

You can add a W-2. If you are stuck in the summary with no option to choose to work on W-2, you can log out and back in.

 

Here is how to do this in TurboTax Online:

 

• Click on Federal Taxes,  Wages & Income,  Job (W-2),  Add/Edit
• On the next page select Add a W-2
• Choose your or your spouse's name, if applicable
• Then, fill out the information from the W-2

Or, on Desktop:

 

• Click on Federal Taxes,  Wages & Income,  I'll choose what I want to work on, Wages and Salaries,  Update
• Select Add a new W-2.
• Enter the info from your second W-2 on the following screens.