Teams Channel Calendar in a Private Channel?
The new channel calendars for Teams is great but it appears you cannot add one to a private channel. I know a Teams private channel is a separate SharePoint site with unique permissions, but is ther...
I found the answer and it is not possible since private channels don’t have a group mailbox.
Teams Channel Calendar App Makes Channel Meetings Easier to Access - Office 365 for IT Pros (office365itpros.com)