Cost basis on 1099-B for Trust where trustee has died

My mother-in-law passed last year (2020).  All her assets were in a trust and invested in securities.  These assets were all sold and the proceeds distributed to the five beneficiaries.  I am working on filing a 1041 using TT Business.  I have the 1099-B forms from the brokerage accounts.  The cost basis reported in 1e show the original basis and not the value on the date of her death.

I assume that all the cost basis amounts need to be stepped up to the date of her death.  How do I properly enter the corrected information into TT?