Our group room is really versitile. Most of the time we use it like any other consulting room - it has natural light via a massive SkyLight and is sound-proofed with double layer gyprock, Rockwall insulation, 4 sided door seals and sound absorbing EchoPanel walls.
But behind an operable wall we store all the conference furniture so that it can be reset into a boardroom or classroom format. It has a WiFi projector screen, whiteboard and audio setup. It has capacity of up to 16 people and we regularly use it for our in-house events as well as running treatment groups.