After you file

@phelix-g  For 2020, you should have an option to pick 100%/50% Charity if your donation was to a church, goodwill, schools etc. After you enter your donations, there should be a screen that looks like the one I included below. Although this isn't available in 2021, it was certainly available in 2020. 

After you enter your charities, there should be a summary screen giving you an opportunity to review all your charities. Now select the button on the bottom right that says Done With Charitable contributions. The very next screen should look like the one I included below.