Howdy Greek and welcome to the forums!

well, there is this:
[Keyclone] setting up a command to work with maximizer (step-by-step)

and this:
[Keyclone] HOWTo - Set up Maximizer (Updated PiP)

and this explaining PiP:
[Keyclone] PiP explained

also consider reading this whole thread:
[Keyclone] Keyclone maximzer isn't stretching WoW windows correctly

if you have any more questions, please feel free to drop me a PM

have a g'night

-- Rob