Apply Material to Face

Is it possible to apply a material to a single face, rather than a whole body? In fusion, I'm able to apply a material to an individual face, resulting in this wonderful Party Rex you see here. Several of the materials (headlights, metal accents, windshield, teeth) are applied to a face over the green powder coat.

Is that possible in Stager? The higher quality image is rendered in Fusion. The "more green" version (Screen shot) is in the viewport window in Stager. Unable to add materials to faces. (though somehow, Before applying the green powdercoat, The materials were still applied to the faces.....