How to deal with test needed a lot of related data

Hello, I have some doubts about creating models via factories under testing process.

For example I have service desk system with tickets as a main objects and if I want to make any feature test on ticket then I need to:

• create ticket by factory but ticket as we know need assigned person who open ticket so we need to..
• create a agent... but agent to be agent have to has role "agent" so we need to... -create role for agent but ticket need to some target person so we need to... -create client -creat role for client -create category for ticket -assign category for ticket -create priority -assign priority -create states -assign proper state -create status -assign status -create first event(message) ... -and of course create assigned company -create and assign responsible agent for this company

and I cannot avoid all these things in simply test "if client can answer in ticket"

What is a best way to make feature tests in complex (in relations aspect) systems ?

Complex setup methods + seeds before start tests ?

Thank you K