circulate among (someone or something)
To move through or within a group of people or things. Here, take this tray of hors d'oeuvres and circulate among the guests in the living room. There's a rumor circulating among the press corps that the senator is going to resign.
circulate among someone or something
to move at random within a gathering of people or things. Karen circulated among the guests, serving drinks. The guests circulated among the various rooms in the house.