In my project I use igGrid from ignite-ui. In headers of columns there are gears. If user clicks gear then a popover apears (feature chooser). My task is to implement custom feature chooser - when user clicks on the gear then my custom feature chooser should apear instead of the built-in feature chooser.

I know how to implement the custom feature chooser and options like sorting, grouping, column moving etc. The problem is that I can't find out how to overwrite the gear click event.