How to set up the Songbook (Korg)or the Music Finder? (Yamaha)

Like the Kn7 which I was familiar with the Yamaha’s Music Finder also works with sets of 8 registrations. Some use one registration for each song. Some that are using all 8 registrations for a single song. Korg is very different. Please I’m open for opinions before I set up my S 970.

Before I bought the Pa4x this is what I was using.
My laptop had 5 columns with 23 songs in each one column. (About 115 songs on each page) (EXCEL)

1-Senior songs code AA
2-Big Band code BB
3-Slow to med. Rock Code CC
4-Rock up tempo (Disco included) Code DD
5-Ethnic, Polka, Waltz and Patriotic. Code EE
When I enter the code into keyboard and the same list appeared.

Each year I added and deleted songs in the list keeping the list up to date.

John C.