The event is called “Event ActorBeginOverlap”.
See your capsule in your player blueprint (or your Mesh if it is the Root).
In details find “collision”. There you will find “Generate Overlap Events” that you must check it to “true” if you want check overlaps events.
And there yet you will find “Collisions Presets” (you can see this in the image that KrautPotato posted before). Here you can choose some presets types or just make a custom one.
How they work? Just select one and there you will see how they interact with others elements. You can create your own type too using Custom and selecting how your elements interact with other things (even you can add your own type object in Project settings - Collision tab if you need).
Investigate and practice those 