How the counter interact with the sim ? (or viceversa)

[MaximilianPS]

I really can't find how the Sims interact with counter when open a  door and drawer.
I need to this counter animations, just like when the Sims cook spaghetti, open the door and take an object.

I really can't undrestand how does it work and how I can clone/link that stuff on my object.
... i've sniffed up and down on a cloned counter  and a cloend spaghetti, but i find nothing