The IS Boxer wizard gets you a working IWT key.

It basically has two steps.
First step enables Click to Move.
And has the slaves assist to target the main.
Next step sends the IWT keybind.
And disables Click to Move.

This is fairly nice, if you don't want to imbed IWT into your spam DPS keys.
You don't have CTM on, so if you click the ground by mistake your team/toons don't run about.



If you want to imbed IWT into your DPS Spam, you need a different approach.

You'll need CTM to be on, all of the time.
Because when you have a Do Mapped Key action, it isn't going to run multiple steps.

I'd go with this basic approach.

Put your melee toons into a melee Action Target Group.
Create a mapped key, that sends IWT to the Current Window.
Create a mapped key, which you imbed into your DPS Spam that does the IWT mapped key, with the Melee ATG as the target.

Create a two-step mapped key, which serves as a toggle.
1) Enables the mapped key which is imbeded into your spam, possibly include Pop Up Text notification.
2) Disables the mapped key which is imbeded into your spam, possibly include Pop Up Text notification.