The problem you are having is, that for getting this to work in keyclone you would have to define the following hotstrings/keymaps:

Character 1:
F = Assist1
Ctrl+alt+F = Assist2
Ctrl+alt+F = Assist3


Character2:
F= Assist2
Ctrl+alt+F = Assist1
Ctrl+alt+F = Assist3

Character3:
F = Assist3
Ctrl+alt+F = Assist1
Ctrl+alt+F= Assist2

And this can't be done in keyclone because there cant be two lines in a keymap with the same activation keys (like 'Ctrl+alt+F') and different commandStrings (like 'assist2,assist3')
And the other way around can'T be used either becasue there cant be differen command-Stings for the same activation key.

So I personally do not see a way to do exactly this in keyclone (maybe i'm wrong), because keyclones focus is not hotstringing but broadcasting (thats why i recommended hotkeynet in the other thread for this, as hkn is designed for hotstringing).

What you can do as a work-around, but only if you don't need shift+F is:

Character 1:
F = Assist1
Shift+Ctrl+alt+F = Assist2
Ctrl+alt+F = Assist3


Character2:
F= Assist2
Ctrl+alt+F = Assist1
Shift+Ctrl+alt+F = Assist3

Character3:
F = Assist3
Ctrl+alt+F = Assist1
Shift+Ctrl+alt+F= Assist2

and bind the follwoing macro to 'f' :
Code:
/assist [mod:alt,mod:ctrl] focus
/follow [mod:alt,mod:ctrl] focus
/stopmacro [mod:alt,mod:ctrl]
/jamba setmeasmaster all
problem of this might be, that '/jamba setmeasmaster all ' might be a little bit 'spammy'