If a user has selected to receive alerts about a specific location you will see a node for each location under the User. Select the entry that you wish to display information for.
To make changes to these details, click the Edit button, make the changes and click Save. You will only be allowed to change the Name (i.e. location), Alert radius and whether or not the selected location is currently active. Once the details have been changed the Save button will be enabled.
If you wish to delete a location then click the Delete button. You will be presented with a confirmation dialog letting you know that the location alert for the user will be removed from My Alerts.
Select Yes to confirm the delete or No to cancel without deleting.