You have several options to bind your connection to SD-Europe community.
Friends and candidate members are accepted just by the registration.
Full membership requires an initiation process and approval of Executive Committee of SD-Europe.
Depending of your chosen level to connect with SD-Europe, there will be annual fee called subscription fee.
Full members will pay either annual membership fee added with yearly administration fee as their subscription fee or if they have chosen to become Lifetime members, just the yearly administration fee.