I feel like I no longer see the wood for the trees. What I'm trying to achieve in the end is the following scenario:
We have a custom application which should be used to reserve rooms in Outlook. I got a exchange account which should be used for this and which should be the only one to make reservations for the available rooms. The used account should have the permission to make a fixed reservation for the room, but I don't know how to add an appointment to the room exchange account via code.
Is impersonation the only way to achieve what I'm looking for? Beside that option I've only found ways to read other persons folder. Any help is much appreciated and any kind of c# code would almost make me try ;)