Your question is Validate System Level Design. Take a moment with it on the right.
Talk me through your thinking if you like. When you're confident, submit your answer and I'll grade it like a real screen (7/10 or better passes).
You're working on a complex digital product with multiple connected workflows, screens, and user roles. The team has early system-level concepts and needs a clear way to test whether the design works as a whole, not just at the screen level.
How do you conduct usability testing and validate system-level designs?