This is a fairly easy and straightforward question and a great way for you to show leadership skills beyond the day-to-day requirements of your accounting work. If you’ve helped with business development activities to grow the practice or led a committee or initiative, those are positive factors to demonstrate your versatility.
One possible answer would be:
“Outside of my daily responsibilities, I have gotten involved on the recruiting side by serving as a company representative during on-campus recruiting events. This includes volunteering at career fairs, conducting mock interviews, or taking candidates out to lunch during in-office interviews. I also lead our office social committee, so I am responsible for planning community outreach events and social events for staff.”