How to create a CDN Edge Group?
On your control panel, navigate to 'CDN Edge Groups' and click on the button 'Create Edge Group'. Give it a label name and click the button to create it.
Start adding locations to the CDN Edge Group from the 'Available Locations' section by clicking the assign/unassign button at the last column. Once a location is added, it will be listed at 'Assigned Locations' section.
Do note that the location has indication whether it support HTTP, Streaming or Both.