Fragment from ESBA Statutes:
10. Competent natural persons of at least 18 years of age and legal persons may be members of the Association, if they submit to the Director an application to join the association, undertake to comply with provisions of the Statutes, and pay the established entry fee in the manner provided for by the General Meeting of members. 
12. Rights of members of the Association does not differ from those provided under the Law on Associations of the Republic of Lithuania (hereinafter – the Law on Associations).
13. Duties of members of the Association:
13.1. To comply with the Statutes of the Association;
13.2. To implement decisions of the General Meeting of members, the Board, and the Director;
13.3. To participate in General Meetings of members.

Here you can find full text of ESBA Statutes in ENGLISH 
If it is interesting for you, your team, your region, you are welcome. If you would like to become of ESBA member and to represent your team or organization, please, fill out the “Membership application form” and send it by Email