[Koha] Transport Cost Matrix

Has anyone had experience with using the "transport cost matrix" for calculating which branch will fill a hold first? What do I need to watch out for? Does it require a new cron job? We are on 3.16.03 Nancy Keener Systems Librarian I.T.O.S.C. Chair Washoe County Library System Reno, Nevada 775 327-8347 nkeener@washoecounty.us