What do you call a committee that is responsible for dealing with other groups?

“Reach Out Committee”? It’s not crazy formal and gets the basics across.

Community Outreach Committee
Partnership Liaison Committee
Public/Partner Relations Committee

Are you looking for a name that you can’t recall or are you trying to make up a new name? I’m not sure I totally understand the Q?

Oversight Committee
Governance Committee
Directing Committee

Bridge Committee
Contact Committee
Roadbuilders
Pathfinders
Diplomats

Advisory Board