Agree with Snafu.
I never found the WB right click six call much use.  Too awkward to hold a view, fly the plane, and use the mouse.  Make it like a "friendly padlock" with one key sequentially highlighting each friendly in the current view, and another key sending the six call.  Then the keys can be mapped to a programmable stick or throttle, and the six call can be sent without taking a hand off the flight controls.