Non published holding instructions.FAA vs JAA

[sideloader]

Hi there,
I'd like to solve the mistery regarding this topic.
I have been talking about this issue with different pilots and everyone has its own view.

Ok, I'd like to know what is the proper way an ATC station will issue a non published holding in European Airspace vs American Airspace.

Also, why in europe some pilots do not even know what an EFC(Expected further clearance time) is?

Could you give examples?

Thanks a lot for your help.