In EWS Managed API is it easy to create an appointment for a specific user:
ExchangeService service = new ExchangeService(); service.Credentials = new NetworkCre
I figured it out from this article: http://msdn.microsoft.com/en-us/library/dd633680(EXCHG.80).aspx
You should use the service.ImpersonatedUserId attribute.
service.ImpersonatedUserId