Can't understand how to add Insert FX!!!

I’ve gone over the manual several times and played around with Halion SE but I can’t wrap my head around how to implement Insert FX. I see the 4 buses in the FX Page that give me Send FX and I see the 4 sends sliders on the Mix page but how do I add an Insert FX to a single channel/ouput? It’s probably simple pilot error but can anyone explain this to me?

Just click on one of the slots that says ‘none’ and a drop down list of your fx will show up for you to click on the one you want.