Side Rail User Filtered View for Chats and Activities
The ability to create your own view for chats and activities. Like Outlook you have the ability to create a user-specific view, you need the same thing in Teams, the ability to create user-specific views of chats and activities.
For example, you may only want to see unread chats and activities from a specific channel and user in a view.
You could create multiple views and make one your default view. The user can then select a drop-down to choose their saved views