After you file
FIRST...Open and Save-As a copy of your original tax file to a second, differently-named file...like..."2022_Original_..." to be used to see what you originally filed at any time later.
Then go back to the Home-opening page that you see when you first start up and look for the "Amend a Filed Return" button lower on that opening page. When you click on that you can then select what file you are going to amend, and the amendment process is started, and the 1040x will be initiated.
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