The interviewer wants to hear that you have experience leading a team. This doesn't necessarily mean you were a manager or that you were a captain. Good leaders have the ability to lead by example through their words and their actions. Strong leaders have exceptional interpersonal skills and can communicate effectively with all personalities in even the most stressful situations. Leaders listen to others and are observant to anticipate needs before urgent action needs to be taken. If you have experience leading a team, share what your team accomplished and how your qualities helped enhance the team.