In order to use the Microsoft Teams calendar, it must be enabled for your team from the admin center. Open Microsoft Teams. Click the more options button in the column on the left. Select Calendar from the window that opens. To pin the Calendar app to the side column right-click it. Select Pin. The Calendar app will be pinned.

Log into the Outlook Web App (https://outlook.office365.com/) Select the Group you want the calendar for: After the Group mailbox loads, click “Calendar”: Copy the URL from your browser (make sure you see “/group/GROUPNAME@domain/calendar”): Add a new tab within a Channel in Teams: Select “Website”:

In this screenshot, we can see the channel calendar in the Teams App Store when a team member adds a tab to a channel. The Microsoft Teams shared calendar is available to all members of the team, except guests. Any team member can create calendar events or meetings in the channel calendar, and it will automatically show up for other team members.