Retirement tax questions

As it turns out, I am the executor for my father’s estate and I do have the cost basis for the interests when he died.  I tried entering all the info I had in the other part of Stocks, Bonds, Mutual Funds, etc. under "Other."  I can fill in everything: that’s it’s inherited, the cost basis, the date sold, and the sale proceed amount…but there is nowhere to input the date that I acquired the interests that I sold in 2021.  I need to be able to do this to establish the date for the cost basis as well as proof that the sale is a long term gain.  When I finished completing that section, Turbo Tax keeps saying “Needs Review.”  So frustrating. Any ideas as how to finish this section so it doesn't keep saying, “Needs Review.”