You can add new alerts by clicking the Add button in the Alerts tab. This will open the New Alert dialog that consists of two tabs: General and Advanced:
Here you can edit the general settings of an alert:
Event: Select an event for which you would like to receive notifications.
Notes to include in notification: If you want to add some notes to the notification, you can insert them into this box.
Send email notification to recipients: Shows a list of recipients for the selected event.
You can type in new email addresses into the drop-down field at the bottom left, or select a previously entered entered address.
You can manage the recipients list with the three buttons below it: you can either Add, Replace or Delete a recipient.
Here you can add restrictions for certain events. You can select for which group, user or database you want to receive this notification:
Apply to Databases: You can either select to receive notifications for all databases or only for certain databases.
Apply to Users and Groups: You can either select to receive notifications for all users or only for certain users and groups.