How to add external jar to the module class path?

Hi

I am trying to add external jar/directory with no luck.
My aim is to add jars located somewhere in my network (e.g.
host)

What I am tried to do is:
Setting ?modules ?library (classpath) tab ? “Add jar/directory” button.
I can only choose jar/directory located at my machine.

Any suggestions?
Moti Tal