Ключевые слова: 21st century, attendance, attendees, audience, audience members, auditorium, business, ceiling lights, chairs, communication, conference, contemporary, corporate, crowd, design, education, engagement, event, formal attire, gathering, indoor event, informative, intellectual, interaction, knowledge, large, learning, lecture, lecture hall, meeting, modern, networking, presentation, presenting, professional, professional environment, public speaking, room, screens, seating arrangement, seminar, slideshow, speakers, stage, stage setup,