lsusb to get the USBID below, then add the following to file:
/usr/share/X11/xorg.conf.d/90-evoluent.conf
OR
/etc/X11/xorg.conf.d/10-quirks.conf
Section "InputClass" Identifier "Evoluent" MatchUSBID "1a7c:0168" Option "ButtonMapping" "1 4 3 2 5 6 7 8" EndSection
you will need to log out then back in