There is no requirement for how many shows you must volunteer at. You can sign up for whatever shows you’re available for. But when you do volunteer at a concert, you often need to arrive about one hour before the doors open to the show, which can be two or more hours before the actual showtime. Then, you will be registering voters before the show, during setbreak and sometimes after the show or during the music. So volunteering can be upwards of a five-hour commitment.