Trying to understand how to detect mouse clicks

I have a character blueprint and in the event graph I can add events for left and right mouse clicks, but they never fire. If I try to add an event to the skeletal mesh or the collision cylinder I can only add OnClicked and OnReleased, and they work fine, but I cannot specify right click. The OnClick events have a “Button Pressed” pin, but I can’t figure out how to use it. There are many questions on this subject, but most are because click events are not enabled. I feel like I’m missing something fundamental in my understanding of how mouse clicks are detected. Can anyone help?