How I can add appointment to Exchange calendar and specify organizer to this appointment?
I work with calendar via EWS (Exchange Web Service) from C# code.
Organizer field in class Appointment have only get() method.
I found info about way via ImpersonatedUserId, but this function don't work in new version of Exchange Server.
As far as I know, the organizer is set by Exchange based on the credentials presented when the appointment is made. Using impersonation may allow you to appear to Exchange like a particular user, and it has other benefits as well in terms of throttling, but that permission has to be assigned in advance via PowerShell.