The owner of an organisation can upgrade the organisation by changing its type. Each [URL=/help/org]type of organisation[/URL] defines a number of pre-requisites and this promotion often requires the presence or agreement of certain characters, such as a superior or priest presiding a ceremony. Promotion of an organisation is only possible once a week and must follow a tree of evolution. However, it is possible to [URL=/help/act?type=demote]demote[/URL] an organisation to start on a different branch.