1. I don't understand why you need IWT for melee. Is it for facing?

I currently have ISBoxer set up so it sets Jamba Master/Follow up switching characters. I assume I have to disable that.

2. Is this the right sequence to use IWT?
-use Jamba strobe to get close to target but out of aggro range
-turn off Jamba strobe
-press the ISB IWT hotkey
-click on the target
-attack the target
-if target moves, repeat the previous 3 steps