Hi thanks very much for your answer! I’m interested in the main UN secretariat. It’s not clear to me how people move up to specific posts. In government bureaucracies there is usually an expectation that past a certain number of years you can promoted to a higher post without an assessment, so I wanted to make sure if that is how the UN works too. There are all these advertisements for senior roles and I don’t know if they are genuine selections, or posts that are lined up for people awaiting promotion.