The first person to log into a meeting is the assigned meeting master. When you are the meeting master you have the ability to create, duplicate or switch between active models, visible to everyone joining that session. This allows for real-time exploring and adjusting design options with up to 8 people.
A share button is visible to the meeting master, next to the meeting button on the Models carousel. By selecting a model on the carousel and selecting the share button the meeting master can share a model into the meeting. Models become visible in a meeting to all meeting participants when they are shared and a copy is made in the carousel of every user in the meeting.
Anyone participating in the meeting can ask to become the meeting master by pressing the "master" button on the model carousel control panel.