Have you been involved in other administrative functions such as payroll, benefits and banking? What did you learn?
Understanding how much you know about other important functions such as payroll, benefits and banking is important in the interviewer's decision making process. In their eyes, it's a major selling point that you have expertise and tested knowledge in several other particular areas and that you have the capacity to build and expand that expertise in the future. So before you respond to the question about what you learned about payroll, benefits and banking think about why it's being asked. Is it to gauge your qualifications for the job? Is it to try to project what you might be doing in future roles? It's actually probably a little of both. Your goal in your response should be an enthusiastic overview of what you're bringing to the table and consequently the benefits of hiring you. Even if the interviewer isn't a subject matter expert, craft your response so that it's clear to them that what you do, you do well.