business training

20s 2530 3035 30s adult american associates attendance audience business businessman businessmen businesspeople businesswoman businesswomen casual caucasian classroom collar colleagues color computer course coworkers crew demo demonstration desk education european face female females four good group image indoor indoors learning listen listening male males men mid middleaged mood office people person photo presentation room satisfied seated seminar sit sitting smile smiling staff stockphoto study studying training twenties using white women work worker working years young