colleague
anonymous
arrangement
attend
audience
auditorium
back view
business
businessmen
businesspeople
businesswomen
chair
collaborate
concentrate
concentration
conference
congress
convention
corporate
crowd
diverse
education
entrepreneur
event
faceless
forum
global
hall
head
indoors
large group of people
lecture
listen
manager
meeting
men
multiethnic
multiracial
occupation
participant
presentation
professional
public
selective focus
seminar
sit
training
unrecognizable
women
workshop