DB Schema for Pickup Groups

Version 1
    This document was generated from CDN thread

    Created by: Gordon Ross on 12-01-2010 04:41:41 PM
    I'm trying to work out the DB schema for pickup groups. I can see the pickup group table (and others) in the data dictionary PDF, but I can't see how a line is associated with a pickup group.
    Cany anyone give me some pointers ?