I've been using Freestyler for some time now and clearly totally wrong

Thanks to this forum I've been able to learn alot in the past few weeks and days.
I've also recently bought an BCF2000, which turns out to work great (still needs some programming though).
From what I've understand, a BCF2000 Is best used with the use of submasters.
So I read the entire tutorial but there's one problem (and you can call me stupid if you want :p): I cannot find that so-called submaster window...( it isn't listed in the "window"-menu at the top, and nowhere else to be found either).
Can anyone shine a light for me please?
Thanks!
Michael