You can notify requesters and assignees by performing the following workflow actions from the Actions menu or Action Bar:
Communications > Notify Requester - this action is typically available if you are not the requester.
Communications > Notify Assignee - this action is typically available if the Ticket is assigned to a technician and you are not the Ticket's assignee.
The e-mail notifications are sent to the Persons' primary e-mail addresses. Your administrator may configure Alloy Navigator to automatically send notifications when the Ticket satisfies the specified condition, or when a specific event occurs.