Actresses perform various roles in front of cameras or live audiences. They often work long hours rehearsing scenes, studying lines and performing on screen or stage. Professional actresses can be found working in dinner theaters, major theaters and repertory groups. Many travel with theater groups or help in the training of other actors for larger roles. Actresses are required to memorize scripts, research characters and rehearse performances. They may be required to confer with others, including directors or other actors, to correctly display the right emotions, gestures and facial expressions.