I think this is what youre looking for. Look in the manual on page 37 "Pattern data vs. track data
While the Style/Pad Record mode is where you can create or edit
the music patterns, track parameters (like Volume, Pan, Octave
Transpose, FX settings…) are to be edited in Style Play mode.
• After having created or edited music patterns in Style/Pad
Record mode, save them by selecting the “Write Style” or
“Write Pad” command from the page menu of the Style
Record mode (see “Write Style/Pad dialog box” on
page 67).
• After having edited track parameters in Style Play mode,
save them to the Style Settings by selecting the “Write Current
Style Settings” command from the page menu of the
Style Play mode (see “Write Style Settings dialog box”