After you file

1. Open TurboTax.
2. Select Amend a filed return.
3. Select the return you want to amend, and follow the instructions to make your changes.
4. Now, make an "amend" copy your return by selecting Save As (Mac: select Duplicate) from the File menu. This preserves the originally-filed return.
5. Name the copy to distinguish it from the original, like 2020 Amended Smith B Form 1040 Return.
6. You should now be working inside the copy you'll be amending. Inside your program, search for amend and then click the Jump to link.
7. Select Continue on the We'll help you change (amend) your return screen.
8. On the following screen, Did you already file your return? select Yes, I've already filed my return and then select I need to amend my 2020 return.
9. Select Continue and then carefully follow the instructions to amend.

Don't worry if your refund meter drops to 0; this is normal. Your calculations will come out correctly in the end.

Finish and file your amendment according to the instructions. 

And the SEARCH   function is very common to most programs ... 

Or go to the amend in the  OTHER TAX SITUATIONS TAB ...