You can find RC21 Institutional documents – Procedures for Board Members and President Selection, Statutes, Some general information on the financial practices of the RC21, and Terms of reference for institutional candidates for the organization of the RC21 Conference and RC21-IJURR PhD Summer/Winter School here and below:
Procedures for Board Members and President Selection [pdf]
Statutes (Revised 2002, 2010, 2012, 2014) [pdf]
Some general information on the financial practices of the RC21 [pdf]