When a ticket is submitted via email or via portal, a ticket notification goes to the user via ticket automation.
However, if a ticket is submitted by one user for another, we will change the Contact on the ticket to accurately reflect who needs to be serviced to resolve the issue. With other PSAs I have worked with, this would have the ability to trigger a notification to the new user that a ticket has been created/modified. Atera doesn't have that notification as an option in the Automation settings.