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Create the application and register it as described here: https://docs.microsoft.com/en-us/graph/auth-register-app-v2
Grant Permissions
The Presence Connector will need at least this. Also, click on Grand admin consent for Jtel GmbH.
Create a Client Secret
Gather all Information
You will need:
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Application: Get App Only Access Token
Application: Get Users
On Behalf of a User: Get User Access Token
Get Presence status of a specific user
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Authorization: Bearer token using the variable: {{UserAccessToken}}.
For more details about the MS Graph Get preseence for multiple users, please see https://docs.microsoft.com/en-us/graph/api/cloudcommunications-getpresencesbyuserid?view=graph-rest-1.0&tabs=http