question

Yes, most likely this was disabled by your IT folks, so talk to them.

thanks reply,

what I want to do is use MS teams calendar , I want to allow a group of people to use this calendar and chat room to communication .

In this case , I have to create team in MS teams?

please ignore to query why I want to use MS teams.

thanks a lot.

Hi derekchan-8110,

It seems that the admin restricts from creating a team. You need to work with your IT/Office 365 Admin to create/change the security group settings in Office 365 for your organization and then only the users in that security group will be able to create a teams in the apps.

Teams is a part of Office 365. This means that an Office 365 security group set up to limit users from creating Office 365 Groups will carry over to Teams.

The specific instructions for setting up these Office 365 Group permissions are found in the topic Manage who can create Office 365 Groups.

Hi derekchan-8110,

You can add a SharePoint tab in Teams. For more details, please refer to this link:
https://medium.com/@saranyansenthivel/creating-a-shared-calendar-in-microsoft-teams-400ab556bfa3.

Also, someone has talked about this topic in this thread. You can learn more from it.

Note: Microsoft is providing this information as a convenience to you. The sites are not controlled by Microsoft. Microsoft cannot make any representations regarding the quality, safety, or suitability of any software or information found there. Please make sure that you completely understand the risk before retrieving any suggestions from the above link.

In addition to the other replies, it is also worth noting that the calendar has separate functionality which has to be turned on manually by the administrators, along with permissions if these are not the default ones.