If you are running the analog type servo drives, then you will have to tune the PID loop (KP, KI, and KD) for each axis in the Galil. Other than that, the plugin takes care of the rest unless you go off doing fancy tool changer code or something of the like on the Galil. And if you are going to setup an Ethernet controller, the IP information will need to be set as well. For "normal" installations, no other Galil programming is required.
Steve