- Open Microsoft Teams: Launch the Teams application on your desktop or access it via the web.
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Navigate to the Team: Locate the Team you own and want to manage.

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Access Team Settings: Click the three dots (More options) next to the Team name and select "Manage team."

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Go to Settings Tab: On the top of the window, select the "Settings" tab.

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Go to Guest Permissions: In the Settings window, select the "Guest permissions" tab.

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Configure Guest Permissions: You'll find several options to control what guests can do within your Team:
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Allow guest to create and update channels: This setting allows guests to create new channels within the Team and modify existing ones. Caution: Enabling this gives guests significant control over the Team's structure. Consider carefully before enabling.
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Allow guests to delete channels: This setting allows guests to delete channels they have created. Caution: This can lead to unintended data loss. Exercise caution when enabling
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Save Changes: After configuring the desired guest permissions, click "Save" at the bottom of the page to apply your changes.