Core members

Sponsoring members - consisting only of organisations - make a larger contribution and their representatives are eligible for nomination to the Management Board and to serve in executive function. In addition, they can replace a representative to the Association.

Contributing members - which can be organisations or individuals - make a more limited financial contribution but they also have the option to upgrade to the Sponsoring level at a later date. They nominate one of their representatives to the Management Board but cannot replace a retired representative.