The Keymap section of my guide should help you out.
Example H, specifically adds IWT to FTL DPS hotkeys.
Might be an idea to read the examples in order, the first start off assuming you know nothing, and the later ones assume you know as much as the previous examples.
You'll want "Click to Move" enabled in warcraft under interface - mouse options.
You'll want a hotkey assigned in warcraft to "interact with target".
In IS Boxer, you'll want to change your FTL DPS hotkeys to two steps.
Step 1 sends your IWT to each client.
Step 2 is the original action.
Connect With Us