Using the Premium subscription, you can have multiple rooms.
Multiple rooms is included with the Premium subscription plan. You can create and manage multiple rooms, and with the update 4th October 2021 you can also have multiple open rooms simultaneously.
Prior the update 4th October 2021 you had to persist your whiteboards if you used multiple rooms. Previously persisted whiteboards have been stored to your library, from where you can load them into your whiteboard.
Your whiteboard is cleared after 14 days if not using it. All permanent saving of your whiteboards should be done to your Library.