Several clients have asked about adding a shared calendar to a Team’s Group so they can all view and edit it directly in the Teams app separate from Outlook.
Unfortunately, this isn’t a native feature, but sounds like it is something that Microsoft is working on. Right now there isn’t a built-in shared calendar feature for a Team’s Group. We did however find a valid work around and thought I would share.
Basically, you can use a 365 Group, create a team from it, add a tab on that team channel and use the “website” option to just link the URL to OWA Team calendar.
You can also use this same trick with a SharePoint Calendar.