Your question is Quality Assurance of Deliverables. 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).
How would you make sure that out of 20 employees under you, all the deliverables which are sent are of top quality (you cannot check each deliverable)?
Asked in the Case study round stage. Explain the operating system you would establish rather than relying on personal inspection. Cover standards, ownership, review mechanisms, prioritization, feedback, and how you would identify recurring quality issues.