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If an owner needs removed and there are no other Team owners, submit a ticket and ask raise a request below asking to create a new owner.
I have a lot of Teams. How do I keep track of activity or hide my Teams?
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The Group visibility is hidden by default. If you'd like to use the Outlook features of the Group, submit a ticket to raise a request below to change your group visibility.
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Search the Microsoft Teams help center for guides and solutions to common problems. If you need technical support, submit a ticket for raise a request below for Office 365 application assistance.
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