I am looking for the following equivalent: https://msdn.microsoft.com/en-us/library/office/dn641959(v=exchg.150).aspx ("How to: Add and remove delegates by using EWS in Exchange")
Is this already on Microsoft Graph? (didn't see on the /beta endpoint that sports the Outlook REST API) If it is not today, is this in the near future? (delegating access to calendar / mails /... is quite common in company settings)