The Support System plugin needs to have front-end access via a web page. Clients need to be able to submit their own support tickets. They should also be able to view their past support tickets.
I have clients that have many employees. It is not feasible to require each of them to sign up or log in. The employees would not create accounts or use the system. They also would not pass the info along for someone else to create a ticket. I do not plan to give any back-end access.
Currently, I would have to enter every support ticket by hand which defeats the purpose of the ticket system. Based on the way it currently operates I could use a Google drive "excel" sheet with revision email notifications, although it would be tedious.
I have a single install subdomain multisite. Please let me know if you need any other info.