InfoPath Dev

Thanks for your reply! I think conditional formatting would work to make the old options show only if already filled out and the new options show only if the old options aren't filled out. I need the options that are visible to be mandatory. Is that possible and how do I put conditional formatting to make this work?

I have a form made by a coworker who is no longer with the company. The users of this form have asked to have a field changed from one multi select field to a drop down and a multi select field that work with each other. So, the existing multi select has car features (dually, single cab, double cab, etc.) as well as make (Chevy, Ford, etc.). ...