What if worksheet doesn't change TAX SUMMARY?

hello have TT Deluxe for 2022 tax year, looking to use the "what If " worksheet for planning.

I made a What if copy of my original return and I  am input data I want to change in that copy.

Do  I have to Save this data change to see Tax Summary changes to occur?

I input various data for income and/or expenses, but dont see changes in the tax summary.

Perhaps I am missing a step? Just need some guidance on this.

thanks

John