Mojo, only the Sonoran / Central American Harris Hawks hunt in family groups. the South American subspecies are solo hunters.
Anyhow, the typical Central American family group will consist of a dominant (breeding) female, 1-2 adult males, and the sub adults from last season's brood. So 4-5 individuals.
in general, the males do most of the bird-dogging / flushing and the females do most of the actual killing.
feeding will progress from dominant female >> juvenile females >> males.
they will continue hunting until all are sufficiently fed
(this is the primary reason HH are good for multiple kills per outing -- as opposed to most other falconry raptors who are one-and-done)
that said, none of them are above horking down a vole or mouse or lizard on the sly when the opportunity arises....
