Dr. Anthony Breslin:

Each country requires its own individual registration. If an Irish graduate went to Portugal, as long as he or she meets basic criteria, he or she would be automatically registered in Portugal, for example. If the graduate had to go to Australia, America or Canada, since there are different registration processes are different, the graduate would have to meet different criteria. An Irish graduate would have an easier time registering in an EU country but every country has to have an individual registered in that country. If someone is practising in Portugal, that person has to be registered in Portugal.