Currently I'm trying to customize the "Registration" prebuilt database that came with Filemaker. I would like to build an additional table to keep course "Instructor" information and data seperate from the current "Contacts" table which I am using for course participants. I'm confused by the "One" reference that I keep seeing. If I am to build this new table and then reference it in the "Registrations" table, do I need to build similar scripts and calcuations using "2" instead of "1"? What does this "1" thing do?