Doing a return for a decease person. He has capital loss from previous year. It could be used to reduce other income on line 253. Turbo Tax does not allow me to do that.

I am doing a return for a decease person.  He still has capital loss room from previous year and no capital gain this year to use it.  I read that on the year of death it could be used to reduce other income.  The amount must be entered on line 253, and Turbo Tax does not allow me to do that. I need help.