Catia V5 catalog import

Hi I'm new here and have a request for my trainiship.

How can I import a CATIA V5 catalog in 3dExperience ?

I mean the 3dExperince is serve based, Am i wrong ? Can I import a catolog with the directory folder of an assembly ? or i have to import any CAT Part of the assemby ?

I tried but the catalog imported is linked empty.

Thanks a lot