After you file

That may not matter.  Did you get the full amount for both rounds?  Did it give you some credit on 1040 line 30 that you shouldn't have got?

 

Have you filed?  If not, go back.  

After you have entered your tax information and are ready for the Federal Review, it will be the first question.

 

If you are trying to trigger it, you can go to Other Situations, answer any questions and click Done. The next automatic selection is Federal Review and it will ask about payments received.