Do you want to integrate the channel calendar with the group calendar (automatically add it to the channel calendar whenever a team meeting is created)?
I'm afraid that feature is currently unavailable, the channel calendar has nothing to do with the Microsoft Group calendar so you can't do any integration, it only works for channels and there is no central calendar that reflects all meetings for all channels.
To get this feature more quickly, you can send a feedback directly to Microsoft Feedback to add it in future updates.
Many features of our current products are designed and upgraded based on customers’ feedback. With requirements like this increase, the problem may well be released in the future.
Thanks for your understanding and support.
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