Eight dignitaries called "Octarchs" rule the city; each of them supervises and is responsible for one level of Yliakum. Together they form the "Circle of the Octarchs" or "Internal Circle", that takes decisions regarding all the people living in the city.
Immediately under an Octarch there are twenty "Vigesimi", high civil servants that deal with law and order. There are 160 "Vigesimi" in total and they form the "External Circle". At the beginning of every year there is a meeting of all Octarchs and Vigesimi that lasts for several months. In this event they evaluate all expenses and revenue of the previous year, all complaining, problems, etc... Vigesimi normally come from the Craft Guilds of each level, and their position is hereditary. Nevertheless is not too rare to find some high citizens that are elected thanks to people acclamation, taking place of Vigesimi that are dead, that are judged inept or that are found to be guilty of thievery.
At the beginning of every season takes place the meeting of all Vigesimi of a level, generally (but not always) directed by the Octarch. During these short meetings the members of the External Circle can elect a new Octarch if the previous is dead or too old. An Octarch can't be removed, nevertheless in some cases the Octarch was assassinated because it was too cruel, inept, dishonest, etc... One of the most famous cases is the one of Fertedian Dalko, Octarch of the 4th level, that was tied to a hypnotized Megara and sent straight towards the Crystal.