Training room door, hand knocking closeup, business conference, company seminar

instructor sports training training board room seminar classroom workshop employee engagement meeting domestic room professional occupation projection equipment learning corporate business door conference - event using computer education office presentation knocking technology organized group working computer monitor leadership 1080p colleague board game hd close to audience speaker part of computer business game night - leisure activity student communication group sports body part indoors teamwork people desk human hand close-up ukraine hand togetherness caucasian high up