Many well dressed people sit together while outside.
many people in suits and ties and one has a cellphone
A group of people who are all sitting down.
A throng of seated people contains mostly suit-wearing Caucasian men with some exceptions here and there, notably two women in the front, one wearing a purple jacket, rear, left, a man with a purple turban, and rear right, a black man with shades.  
A lot of nicely dressed people sitting and waiting for an event to begin.