Do you mean that you want add Whiteboard as an app in Teams?
In fact, Whiteboard is just integrated in Microsoft Teams meetings. It is not included in the Teams apps. For more information, please refer to this article: https://learn.microsoft.com/en-us/microsoftteams/manage-whiteboard.
If I misunderstand your words, please give us more details to know your situation clearly.
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@Barbara O ,
Haven't received your update for a long time, any update now?
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