You must have at least Regional Administrator privileges' to complete this task.
Navigate to Admin Tools > Notifications
Select the notification you would like to edit
Optional: Configure specific email address recipients using the Recipients tab
Optional: Add PREO Groups (Alert will follow user's PREO notification settings)
PREO Groups can be configured Admin Tools > Region & Core Setup > Users & Groups
Once the recipients/groups have been added, the users will begin receiving the notification when the event triggers.