Someone tried to do this last year. Not sure how it turned out. Here’s that thread. http://talk.collegeconfidential.com/music-major/1713213-scheduling-live-auditions-p1.html
Also, have you read through this thread from last year’s auditions? http://talk.collegeconfidential.com/music-major/1730336-tell-us-about-audition-day-2015-p1.html
This series of posts on violinist.com has some great advice about the entire process: http://www.violinist.com/blog/karenrile/20139/15001/