After you add an instance of a custom email alert, you can assign users to the instance so they can receive alerts when you run the send process. To view and manage the users assigned to the instance of an alert, access the record of the instance. You can access the record of an instance from the record of its email alert type. Under Instances, select the instance to view and click Go to instance on the action bar.
Under Assigned users, you can view the application users assigned to receive alerts for the instance. You can view the display and user names and the email address at which each user receives the alert. To view additional information about a user, select the user in the grid and click Go to user on the action bar. The record of the application user appears.
From the grid, you can assign and unassign users as necessary.