The form is in Screen 17 > Look in the left column for Sections > Casualties and Thefts (4684)

You will need to wait awhile for the software to really get up to speed, but I think you need to enter DR-4557-IA for the FEMA code

FEMA Disaster Code

Enter the FEMA disaster code designation for the personal casualty loss being reported on Form 4684.   This information will print on the Form 4684, page 1.