Currently only delegated user permissions are supported, and this is very sub-optimal for bots and service applications that need to monitor Teams presence of users.
Thanks Jeger . However, that remark is under the 'Teamwork'-node. This discussion is about presence information, which is retrieved using the APIs mentioned under the 'cloudcommunications'-node in the documentation. There is no such remark there:
https://docs.microsoft.com/en-us/graph/api/cloudcommunications-getpresencesbyuserid?view=graph-rest-beta&tabs=http