A cloud-based service included in Microsoft 365, delivering scalable messaging and collaboration features with simplified management and automatic updates.
Mailbox Folder permission only works for mailbox folder. You cannot set permission for Office 365 group calendar folder. Here are detailed information about it:
- Mailbox calendar folder:
- Office 365 group calendar(You cannot set permission for it):
If you want an non-Office 365 group member to see this calendar, you can send a copy to that user, copy will not be updated in real time:
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