Even though I suspect mentioning MS Word might get you banned for life on TeX.SX, this looks like an interesting feature.
It appears to be a Macro, so review this perhaps: Record or Run a Macro
And after reading this review by this guy who shows as one of the developers, mrsparkle713, I think it might help to contact one of them.
This is an easy plugin for LaTeX in Word. One very nice feature is
that it does not require you to install anything on your computer. It
all runs out of Word using macros, and the LaTeX conversion is done on
a remote server that can be changed if you don't want to use the one
that is set up. Now that I have this I need to really learn LaTeX.
After the learning curve, it should be a lot easier and more
convenient to use than the equation editor that Word provides. I will
be maintaining the project shortly, so take my review with a grain of