I am building a basic car and having some problems adding the glass to only the windshield. I made a group, selected the windshield, and clicked assign. Once I add the material, it covers the whole car. Any advice or suggestions would be greatly appreciated. Thank you!
The first material will cover the whole object no matter you assign it or not.
You should add one more material slot with the “+” button on the right side. And make you glass material and assign the face to the second material slot.