How to Amend 2020 CA State Tax along? (NOT federal tax)

Hello, I just submitted my 2020 federal and California Tax return on Turbo Tax Home and Business. And the status of both are "Accepted" already. I suddenly found I forget to include a minus mark on on of the CA numbers, which is different from the federal number, in one of my K1 form that I need to manually entry during the CA State filing process. This negligence of a minus sign caused my CA income completely wrong. How can I amend and resubmit my 2020 tax retunr to CA again on Turbo Tax? I can't find it? Please help!!

 

FYI, there is no change on my federal tax return for my situation as the numbers on my Fed return is correct. Please instruct the correct step. Thanks!