The session window will look different while you are in a session.
Objects selected by other users are highlighted with a grid shader in the user's color that turns opaque as it gets farther away. These objects are locked and cannot be edited until the other user deselects them. Each user has a camera with their color and name that shows where they are in the viewport.
Synced game objects in the hierarchy window will have icons next to them showing their status. Synced assets will have icons in the project browser window as well. See below for a list of which asset types sync. You can adjust the position of these icons in the Scene Fusion settings.
indicates the object is synced and unlocked.
indicates the object is locked by another user. The color shown is the color of the user locking the object.
indicates the object is partially locked. Partially locked objects cannot be edited but can have their children edited/added/removed.
An object is partially locked if one of its desecendants is locked by another user.
indicates the object or one of its components has one or more notifications. The notifications are shown above the transform in the
inspector for selected game objects. You can also view all notificatons in the notification window (Window -> Scene Fusion -> Notifications).Scene Fusion will create a Scene Fusion Guids object in each scene that does not sync (does not have a green checkmark in the hierarchy). Do not delete this game object. Scene Fusion uses it to track game object ids. If you delete it before joining or starting a session, Scene Fusion may not be able to match ids to game objects which can result in lightmaps for those objects being lost until lighting is baked again.
Scene Fusion will sync the following assets if they are referenced in the scene:
Scene Fusion also syncs scene objects if they are scriptable objects or one of the above types. Scene Fusion syncs new prefabs that are created during a session. Prefabs cannot be edited during a session. Scene Fusion will not sync asset deletion or asset renames.