How to Hide Teams
If you want to hide a Teams channel...
1. Open Teams
2. On the left side, click Teams
3. To hide a team, select the ellipsis (...) next to the team name, or right click the team name and choose Hide.
4. To unhide a team, scroll to the bottom of your teams list and select Hidden teams. Find the hidden team, select the ellipsis (...) and then choose Show.