Selecting a face of an object in-game

In my game, I am trying to create a hex-planet where each hex is a separate province that can be selected separately. However, I cannot seem to find a way to find which face the player would click on during the game. This is fairly critical, as I cannot have a game where you click on the planet and nothing happens. I have a looked at Semitable’s Almost Hex Planet Procedural Generation (Almost Hex Planet Procedural Generation - Showcase - Epic Developer Community Forums) but I cannot seem to find how he accomplished this task. I am fairly new to UE4 and I have been using the blueprints, however I come from a background of Python programming so I can try to learn C++ if it’s required. So, I guess my question is, how can I get which face was clicked on the planet during the game?