Not exactly sure what you need here but the 'Upper Eyebrows' are for transparency maps that give the brows some depth... I.e when you render Vicki or Mike from the side, the brow hairs seem to protrude naturally from the face. The normal brows just get painted on the head texture. If you don't want to use the 'Upper Brows' there is an MT on her head to make them go inside the head and not be visible.