The IPOS published a Guide to the CMO Class Licensing Scheme

Collective management organisations, or CMOs, are private entities appointed by rights owners (their members) to manage the rights in their members’ copyright works and protected performances (or content for short). This includes granting permission to use the content, collecting royalties (known as tariffs in the legislation), and enforcing rights on behalf of their members. In this way, CMOs perform a vital role in the copyright ecosystem by connecting rights owners with users; bringing about efficient transactions by reducing transaction costs and providing simple, cost-effective access to content.