The EIB’s Statute and Rules of Procedure determine the composition, qualification and expertise of the members of the highest governance body of the EIB, which is the Board of Governors. Governors are ministers, mostly Ministers for Economy and Finance, representatives of democratically elected governments.
The Rules of Procedure establish the composition, qualifications and expertise of the other EIB governing bodies and of the Board committees.
See the following website pages:
http://www.eib.org/infocentre/publications/all/statute.htm, p. 14 and articles 174 and 175.