Nifty trick for Lacerte - In this case go to forms view - Right click on the yes box for line 37 and select "Jump to Input" That should take you to the Automobile section of the depreciation screen (Screen 22 for the 1040) and a series of check boxes. "Prohibit employee use of vehicles" checking that should get the YES..

If you are working in Screen 30, there are similar boxes in the Vehicle Information section.

The RIGHT CLICK link to input is  pretty universal through all modules of Lacerte.