This is an old revision of the document!
Certain types of behavior ultimately come down to a handful of rule tables in the database. The goal of both the circ scripts and the alternative matrix tables is to pick rows from those rule tables. In older versions of Evergreen, you would configure these tables with the "Open-ILS Bootstrapping Scripts", under "Circulation and Holds Rules". This interface lives by default at http://hostname/cgi-bin/config.cgi I thought all of the Bootstrapping interfaces were deprecated and replaced with "Conify" interfaces, but I can't find any for the config.rules tables.
Someone else can tackle this one.