How to create amendment for 2019 return after paper-file?

I created my family's 2019 tax return using TurboTax Home & Business, due to some online issues I had to paper-file it back in April. Now my wife received a K-1 and we need to create an amendment. I tried to add the K-1 to my tax return file, TurboTax does not create amendment. How do I create an amendment using TurboTax? Thanks.