I want to check the box to NOT spread out 2019 disaster IRA distribution on form 8915-D. Where is this option in Turbotax for an amended 2019 return?

I am filing an amended return for 2019 because the 8915-D form was not available before the 2019 extended filing deadline.  I want to pay the tax on the distribution this year and not spread it out over three years.  There is a check box to do this on the form, but I can't make the selection in Turbotax.  How can I make this selection?