How to make compound colliders

I need to make an object have compound colliders/collisions. However I cannot find any guide or how-to for making them. It seems Unity lets met add multiple colliders onto an object, but not more than one of each type (ie: It lets me put a box collider and a sphere collider on an object, but not 2 box colliders).

From all my reading it appears that a compound collider is the solution to my problem, however, I have no idea how to make multiple colliders attach to an object. Also I don’t know how to utilize the parent/child status that the Unity manual talks about.

A compound collider is just different GameObjects with Collider component, which are parented by drag-n-dropping them on top of another GameObject. Its pretty simple, imho.