Click on "App Settings"

Select 'Calculators'

Select the calculator you want to adjust from the primary tabs at the top (Purchase, Refinance, or Affordability), then use the tabs below to switch between Conventional, FHA, VA, and USDA.

Once the appropriate tab is selected, adjust default values as desired, then click the blue "Save" button

Below are a few supplemental screens that display how the calculators can be adjusted: