Joining the Diversity Charter is done online and free of charge. In addition, the commitment can be made visible by participating in the public signing ceremonies during which the signatory organizations make their joining visible. These events revolve around a training day in which experts on the subject present ideas, reflections, research and good practices on diversity and its management. They are frequently organized in collaboration with the Representative Office of the European Commission in Spain. There is a small cost for participation regarding a physical diploma and photographs.