Just to add a bit to W1 post ~ for the issue of the initial multi-pilot type rating, a junior birdman will need to have successfully attended a MCC course once the light ac flying is completed for the CPL/IR licence issue.
EASA have now published details of the new style of enhanced MCC course ~ APS, where the JOC element is embedded into the 40 hours (10 exercises) course.
Your MCC/APS certificate will state that you have completed this new certification level.