Yamaha MONTAGE 6 Supplementary Manual page 26

 Part Category Search
When "Mixing" of the "Parameter with Part" (Param. with Part) setting is set to off, you can change sounds continuously, using
the current setting values for the Part such as Volume, Pan and Note shift.
[PERFORMANCE]  (When the Part to which any sounds are assigned is selected) Select the Part Name 
[SHIFT]+[CATEGORY] (Part Category Search)
Operation
or
(When the Part to which any sounds are assigned is selected) Touch the Part Name  Select [Search] from the displayed menu
Param. with part (Parameter with Part)
Determines whether or not to read and use the parameter values for the next Performance. When the set of parameters is set to
off, the current setting values are continuously used even when the next Performance is selected.
Settings: Off, On
MONTAGE Supplementary Manual
Parameter with Part
26