is it ok, if i first point you to some example of the ftl with 2 boxing:
Focusless, targetless, 'leaderless' setup.

and the general keymapping tutorial (with you maybe have even read)
What exactly are hotstrings for?

And maybe you can look at the other examples i added to the wiki:
http://www.dual-boxing.com/wiki/inde..._Other_sources

if you after investigating this have any specific questions i'm glad to answer you