Create a new channel
To create a new channel, start in the team list. Find the team name and click More options ... > Add channel. You can also click Manage team, and add a channel in the Channels tab.

*You can create up to 200 channels over the life of a team. That number includes channels you create and later delete.
Delete a channel
Navigate to the channel you wish to delete, and click on More Options (...) and select "Delete this Channel".
Get Help
If you need additional assistance with Microsoft Teams, please review related articles, or submit a ticket to the Help Center.
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