Share "See All Event Details" with those whom you want to see your event details
Share "Make Changes & Manage Sharing" with your Delegated Scheduler
Delegated Scheduler should enable notifications for the shared Delegator's calendar (they must log into their own Google Calendar, click on the delegated calendar's drop-down menu, and choose Edit Notifications)
Share "Make Changes to Events" with anyone who needs to put events on your calendar, but not manage sharing rights