The Multi Crew Coordination or Multi Crew Co-operation (MCC) is an allowance, an additional training at the commercial pilot licence required in order to fly within a crew, that means in a multi-pilot aircraft with the aircrew consisting of at least two members. It is a requirement for pilots applying for a multi-pilot type rating and can be done separately or together with this type rating. The course is under the supervision of a Flight Training Organization (FTO) or a Type Rating Training Organization (TRTO).
The MCC course's purpose is to train pilots working as part of a multi-member flight crew. It teaches about communication and coordination.
This course is under the law of the Flight Crew Licensing (FCL1) part F.
References
Multi Crew Coordination Wikipedia(Text) CC BY-SA