I was not sure if it will work as I understand, so I've read part of the documentation again. It is always good to read for new features, and really a pleasure to Read The F... Manual ;-) You've done a great job!
So in the last paragraph "Good to know" here
https://www.akeebabackup.com/documentation/akeeba-ticket-system/component-frontend.html
As a member of the support staff you can file a ticket on behalf of a user in the front-end. Just click the New Ticket button in the category you want the ticket to be filed in. In the new ticket page you will now see a field called User. Use the Select User button next to it to select the user you're filing this ticket on their behalf.
But when tested with my test user, there is NO notification email sent to him (the user I'm filling this ticket for). Is it the expected result?
If yes, would it be a reasonable feature request?
Note: when created from the back-end, it sends a notification, but as you recommend, I prefer not to manage ticket from here. Plus this is different user roles and access.
Kind regards,
Hervé