on/off= duplicates deck a or b into deck d / turn off frequency selection
button 1 = select high frequency
button 2 = select mid frequency
button 3 = select low frequency

at first you have to press on/off.
then you select the frequency on which you want to apply the effect.
you have to activete the effect from another device.
finally press again on/off to eliminate the frequency selection.

note1 = you need to be in fx group mode in traktor.
note 2 = to duplicate decks in deck d it must be in pause, not playing.

knobs 1 2 3 adjust high mid and low freq on deck d

buttons highlighted in the image are mapped in the same way on deck b.

IMPORTANT= this is my own modded vci100mk2 mapping, ive altered some other functions on this mapping.this mapping is meant only to demostrate a solution to apply the rmx1000 isolator effect.

If you are using a midi fighter instant gratification mapping in 4 banks mode, to affect only the selected freq you must focus un deck D (4th botton in the first row). if you select deck A or B you will affect the other freq.
for example : 
you select mid freq (button2) , then focus on deck D will affect only mid freq.
instead if you focus on deck A it will affect high and low freq.