Hi Goed and welcome to the forums!

as for maximizer... you need to set up a keyclone command for each wow, as well as the maximizer layout in order for maximizer to work for you.

check this thread.. it might help:
[Keyclone] HOWTo - Set up Maximizer (Updated PiP)

as for your clone getting the same targets as your main, you need to use a combination of keyclone key passing and wow in-game macros.

check this thread:
FAQ: step-by-step basic keyclone setup

and of course, you must have a license for every machine you run keyclone on (it's a one time fee... but it is per machine)

if you still have questions, please feel free to drop me a note.