Help with BP Actor Spawn on Colission Event

I recreated this particle effect for a project I’m making of this tutorial:

Around 15:03 he starts handling the colission event. I recreated everything just fine but after a lot of online searching I simply cannot find how I can use said colission event to spawn a BP Actor I’ve made specifically for this effect. I want to spawn this BP everytime one of those rays hits the ground, how can I make this happen? Are there any resources you could provide me with that could help? So far I haven’t found anything on how to spawn it through the colission event and the rays of light have been set to spawn randomly so it has to be attached to the colission event for the BP actor to make sense in game.

Many thanks in advance to anyone who is willing to help