There are two ways to do it, I will tell you the easiest way for me to explain.
Go to the ARMA3 directory, where "arma3.exe" is located.
Drop the 3 folders there; "@TEI", "Keys", and "userconfig" click yes to merge folders.
Don't forget you need "CBA" to get to work, and you need to enable it in the ARMA3 menu.
Congrats you are done! :D
MasterPony
JOSH joined
Origin (EA) ID: MasterChief_JOSH;_____________ Steam ID: MasterChief_JOSHShepard;_____________ Raptr ID: MasterChief_JOSH_____________Lead Developer in the 'Space Ponies' Moddb dev group