An Event Request is the same thing as a Facility Use Request submitted by either a district staff or a community user for an event using a district space (or spaces). These Requests are managed via the Admin > Manage Requests screen.
A District Group Request is from a staff member who wishes to allow specified district staff to submit events into ML Schedules™ Software on their behalf.
These requests are managed in the Admin > Manage District Groups screen.
Email notifications are received by district Admins for both types of requests.