Thanks for your question.
We don’t have a specific DVD for a group fighting, but the DVD #15: Defense and Attack has a chapter about how to fight multiple opponents. Before fighting multiple attackers or learning a group combat, the person should learn how to defense against one attacker. I would recommend you to get Spetsnaz DVD #15 , because it has a lot of valuable, fundamental information, simple and effective combat techniques.
FRAGMENTS FROM DVD #15: DEFENSE AND ATTACK: