Unused Tuition Amount from Previous Year - modify Amount claim in 2019 field

I am using Turbo tax Standard 2019.  Why cant users be able to modify the field "Amount claimed in 2019" so that they can decide what amount they can claim? I have about 16000 federal and 6000 provincial unused tuition from previous years. I dont need to use my unused tuition amount from previous years because i am already getting a refund. It looks like Turbo tax is calculating an amount to use  

 

If I enter 0 for Unused tuition and education amounts from previous years, for both federal and provincial, would this cause any issues with CRA?