How can I replicate Contexts gesture for application switching?

There is an app called "Contexts" that lets users scroll down from the top edge of the trackpack with two fingers to switch between applications (I have attached a screenshot below). This app hasn't received any updates in a long time, so I would like to replicate this function into BBT instead of buying it.

While not specifically the right corner, but BTT has a builtin trigger for "2 Finger swipe from top edge" that should replicate this. You can use that trigger and combine it with the "Application switcher" action to achieve what you suggest.