This chapter looks at two institutional arrangements that have been designed for the networks around developing the Ghent Kanaalzone in Belgium and the development of the expansion of the port of Rotterdam in The Netherlands. The analysis, focusing on legitimacy, consent and accountability as problems to be solved in networks, shows that that in both countries the arrangement examined created, out of necessity, new forms of legitimacy, accordance and accountability. Through continuous feedback with the institutions of representative democracy the network arrangements and decisions become embedded within the procedures of representative democracy.