Summary: Practice skills in virtual reality and receive feedback from your peers.
From the main menu, scroll right along the carousel to the last option labelled 'Multiplayer Practice', as shown in the image below:

You will enter a multiplayer lobby room, where you can create or join an active online room.

If you are the admin, select 'Create Room' and set the Meeting ID. This acts as the password to enter the room.
If you are not the admin, you need to get the Meeting ID from your admin. You can enter this ID after pressing the 'Join Room' button.
Once all the participants are in the lobby, the Admin can press the 'Start VR Scene' button. All participants will enter a meeting room together.
Participants can still join the session after the initial group has entered the multiplayer session.
Group size
The maximum group size is 6.