EASA has (what appears to me to be), a somewhat less formal stance on CRM than we currently do in the UK.
AMC1.1 ORO.FC.115&.215 Crew resource management (CRM) training
CRM TRAINER
The acceptable means of compliance are as set out in AMC1 ORO.FC.115&.215, except for (b)(2) of that AMC, for which the following qualifications and experience are also acceptable for a CRM trainer:
(a) a flight crew member holding a recent qualification as a CRM trainer may continue to be a CRM trainer even after the cessation of active flying duties;
(b) an experienced non-flight crew CRM trainer having a knowledge of HPL; and
(c) a former flight crew member having knowledge of HPL may become a CRM trainer if he/she maintains adequate knowledge of the operation and aircraft type and meets the provisions of AMC1 ORO.FC.115&.215, (b)(2)(i), (iv), (v) and (vi).
GM1 ORO.FC.115&.215 Crew resource management (CRM) training
GENERAL
(a) Crew resource management (CRM) is the effective utilisation of all available resources (e.g. crew members, aircraft systems, supporting facilities and persons) to achieve safe and efficient operation.
(b) The objective of CRM is to enhance the communication and management skills of the flight crew member concerned. The emphasis is placed on the non-technical aspects of flight crew performance.