I am using TT Premier 2023 and it supports box 1f. There are probably better ways to get there, but here goes.
1) Be in step-by-step
2) I'll choose what I work on
3) In investments income, select Stocks, Cryptocurrency, Bonds, Other select the Update Box
4) Edit one of your 1099s
5) Edit one of lines of your 1099
6) At the bott of the screen, the is a box you need to check that says "I have other boxes on my 1099-B to enter"
This will cause the other boxes to show u and be able to be edited.
Hope this helps
