Use Whiteboard in Teams meetings on Surface Hub
When joining a Teams meeting, sign into Whiteboard or Surface Hub, and then click the Whiteboard icon in the meeting controls to share the whiteboard.
Note
If you add any content to Whiteboard without being signed in and then use the Whiteboard icon in Teams to try and share it, a new empty board will be created and shared with the meeting. The prior whiteboard will still be synced to your list of whiteboards.