the exact procedure depends on the era of operating system, the 604 should be the same as the 7k, and the exact functions you want to alter, earlier boards need a different procedure:

Load the midi, play a few measures, change voices, transpose etc, go to the sequencer page and press panel write and ok it, now save as a technics file, page 2, all off, seq only.
If you also want foot controllers or other technics features save the panel memory with your preferences set too.