Actresses must obtain experience to gain recognition and improve their acting abilities. Many actresses participate in community theater productions, while others work in dinner theaters or theme parks to gain professional experience. 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.