I am using Karabiner so that my modifier keys (shift/ctrl/alt/cmd) are global instead of per-keyboard, so that the modifiers on my main keyboard also affect my

I am using Karabiner so that my modifier keys (shift/ctrl/alt/cmd) are global instead of per-keyboard, so that the modifiers on my main keyboard also affect my Keybow 2040 function pad. I would love to know of a simpler way to do it.