Ключевые слова: assembly, attendees, audience, auditorium, blue, bright, business, career, collaboration, communication, community, conference, convention, corporate, crowd, development, discussion, education, engagement, event, female, focus, forum, gather, group, hall, indoor, interest, learning, lecture, lighting, listening, meeting, men, networking, participants, people, presentation, professional, rearview, seminar, session, sitting, speaker, stage, strategy, training, woman, workshop,