Thanks for the request. Currently there is a way to set this property through powershell for groups, but it only works for users in OWA. We have this in our plans for Outlook desktop as well and will be working on it.
Thanks.Matt Mendenhall commented
I also vote for this feature to be implemented. We want to allow an executive assistant to be the only person allowed to add or edit events.
181 votesMatt Mendenhall commented
I agree with Alex and anonymous poster below. This feature should be a prioritized requirement for OneDrive. The current process is beyond clunky and still requires a copying process from the old account to the manager's account. When an account has terminated, it should be as simple as a one click from an automated email, and the files should end up in a separate folder in the manager's OneDrive with an option to reassign to another user if needed.