I need to amend Sch A of my NY state return because Line i showing the incorrect number of days that I did not work in NY state. How can I access Sch A? Thanks!

I did not work in NY state any days and want to make sure I report it that way because I will not be filing in NY next year. I want there to be at least two years history of never stepping foot in the state, which will be accurate. I only know it's wrong because the review process flagged an issue with line j (based on the incorrect number on line i) but I can only change line j. Am I able to access Sch A using the online version or should I switch to the downloaded version? Thank you!