DDJ-1000 BEAT FX MASTER CHANNEL PROBLEM

Hi everyone and admin Pioneer DJ 

I beginner djing with DDJ-1000

If i select master (mst) channel on beat FX section and turn on the effect, all channel 1,2,3,4 also activated the effect

how to fix this ?

i use rekordbox version 6.6.3 and lattest firmware for DDJ-1000 v1.12

please help