The problem might be IS Boxer has an auto FTL, if you run the wizard.
And you are using a focus based approach.
So they might be in conflict.

If you run the wizard, and let is assign FTL modifiers to your toons.
You won't need to use focus for assisting, attacks, follow etc.
It will be done for you, automatically.

I'd really look at the auto FTL option.
Press 1, on the active toon, and every slave will also press 1, but first auto assist (no macros in wow at all) the current active toon.
Press your follow hotkey, which is an IS Boxer hotkey, not a wow macro. Slaves will auto follow the current toon.
You can also configure auto follow of the new leader, on a leader switch.
Jamba for movement can be integrated into IS Boxer.

The IRC is the best place for immediate answers.
There are people there 24/7, most are idling but there is usually an answer fairly fast.
Much faster then posting here, although this works too.