If they are joining a 'quilting group' then it would seem logical that they be expected to learn how to quilt which includes, but is not limited to, selecting fabric and pattern, cutting fabric, piecing, basting, quilting and binding. If they don't want to learn these things then I would question their reasons for joining or forming a quilting group. Yes, some people excel in certain areas and that is what they may want to focus on, but to expect 2 members of the group to do all the work except the hand quilting sounds somewhat off to me.