A Room can be thought of as a kind of classroom. Each Room has a passcode, and anyone who enters that passcodes will enter that Room. Anyone in the Room (who isn't in Ghost Mode) will be able to see and hear others in the Room (unless they're muted).
Each Room can have a library of Scenes that can be loaded at any time. Similar to a Star Trek Holodeck, the Room can be transformed into a wide variety of experiences by loading different Scenes.