Try...
www.easa.eu.int
Check the Front Page for countries already members of EASA and choose preferred language.
Search for Regulation "2042/2003" Part 66 is in this Regulation.
Your friend would be looking for a B2 Licence.
Check the syllabus/qualifications required and the training time required.
If your friend is on track for all these things he may be elligible for a Licence if he takes exams in a Member State of his choice, He MAY have to remain within that Member State's system for some time afterwards.
Best of Luck
Rigga