Endless runner make different collides on same tile

I am following the blueprint endless runner tutorial. I can get everything fine runner up to spawning coins and a collider, no problem.

I would like to add an extra collider than my character has to jump over or go under as well, but can not figure out how to add it. If I simply follow the directions and add it to the existing coin and collider area, it changes all my rocks to random trees instead. (Trees are what I will jump over) Can anyone lend a hand? Quite stumped here.