2024 What-if form to estimate 2025 taxes. I cannot change the standard deduction

Hi,

I am trying to use the "what if" form to estimate next year taxes. I cannot change the standard deduction for 65 old people (17,750) and include the seniors' bonus.  Does anyone know how to do it.  The line does not allow changes, or I don't know how to do it.  I copied column one to column 2, and I was able to change income, interest and input RMD, but could not make changes to the deduction line.

Thanks for any suggestions.

DH