senior businessman presenting on meeting

60s adult american associates attendance audience board briefing business businessman businessmen businesspeople career casual caucasian cheerful conduct conducting conductor conference coworkers demonstrate drawing employee employment european explaining face four gesture gesturing grey group hair hand happiness happy horizontal jacket job laughing learning lecture lecturer lifestyle listen listening male males man mature men office old people presentation presenting professional professionals room seminar senior showing sit sitting sixties smart smile smiling speaking suit team tie training white whiteboard work working