Assign Faces to a Layer

(on a face) Assign Layer

This command is invoked from the Object Editor when a face is highlighted (or when multiple faces are selected) and the right mouse button is picked.  You can use it to first explode a face and then assign it to a layer.  The Layer Manager is displayed to select the layer or to create a new layer to assign the face to.  If the face is already assigned to the selected layer, it will still be exploded.