Going Through Objects in Unreal 4 - Beginner Issue

I’m an absolute beginner in Unreal Engine 4, I’ve only gotten it this month. So I put the SM Rock Prop into the default scene and when I press play, I can fly through the rock, but not through the chairs or table. I’m wondering how to make it so that I can’t pass through the rock. Thank for your time.

The rock has no collision geometry set.

Take a look at this Video: :slight_smile: