Enable "-guard" from the context menu

[Putrid Kitten]

Simply:
Make it possible to right click a character, and select the -guard function from the radial menu.

Why?
Because it would make it possible for tanks to respond better, and make the whole -guard system a bit more active.

I want to create a AHK script that allows you to hover over a character and click a button, and then that character immidiately is put on -guard mode. For this to be possible, there needs to be a way to either send a tell from the context menu, or the -guard function needs to be in the menu.