Hi Daryl,
you can memorize a certain Intro, Main variation, Ending or the Break by just pressing the desired button in the Style Control section.
In case of the Intro, first press the Main variation button that should play after the Intro has finished, then press the desired Intro button.
If you want to memorize a Fill-in, press the desired Main Variation button TWICE, so that the button is flashing.
Finally you have to save the Registration Bank as a file of course. You can do this after memorizing ALL needed Registrations (on 1 - 10 buttons). But to be on the safe side, I mostly (re-)save the Bank always when I have memorized a new Registration. (Overwrite the previous Bank file in this case.)
Best regards,
Chris