Hello Westy,
"Load a composer style from floppy disc into the composer memory and then save that to a panel memory so that the ryhthm can be selected at will from the panel memory in future instead of having to load each time from floppy disk."
This is impossible. The panel memory is like a note pad, it can remember all the instrument settings but NOT the composer data.
Sorry, your ensemble piano is not fit for the frequently using of disk styles.
The solutions for your problem are not cheap, because you have to add a better aranger keyboard like KN 7000 or YAMAHA PSR 9000/ 9000 pro.
Or you may use MIDI files.
Regards
RF