Glad to hear you have it working! If you’d like to switch the avatar per-player, you’ll want to create an avatar prefab by following this guy: XR Avatars and Voice Chat | Normcore.
Then you’ll want to set that prefab in the Local Avatar Prefab slot of the RealtimeAvatarManager component on the client that you would like to use that avatar with. The Local Avatar Prefab represents what avatar prefab should be used to represent the local player on all clients.
Max