Roland V-Piano Owner's Manual page 56

Customizing the V-Piano's sounds
To edit the setting of multiple keys simultaneously
1.
Press the [F1 (RangeSet)] button.
2.
Hold down two keys to specify the desired range.
3.
Use the [VALUE] dial to edit the setting.
The setting will be changed for the range between the two keys you specified.
Beyond that range, settings will be made automatically to create a smooth transition.
4.
Press the [F1 (RangeSet)] button once again to return to the parameter setting screen.
If you play three keys simultaneously or hold down the damper pedal and play three keys...
The values will not be edited for the keys at the two ends of the range; the value will be edited for the center key.
Settings will be made automatically to create a smooth transition between the center key and the two ends of the key
range.
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