How do i make multiple teams have the same chat channel?

I am making a Roblox football game, and i wanna migrate from legacyChatservice to the new one. And i’m wondering how do i make it that multiple teams have the same team chat channel?

I have 6 teams, 3 on one side, 3 on the other
The 3 teams on each side consist of the Player, The goalkeeper, and the subsitute players. And i wanna make it that the 3 teams on each side can speak in the same team chat of their side