It varies a lot across countries. There is no clear pattern about the nomination of the chief statistician. We recommend that whatever the process is, it should be transparently spelled out. It should be clear what the process is. I think that is the first requirement.
The other point, which I made earlier, is that we think it's good practice to somehow state that there should be some professional competence or that the chief statistician should be selected on the criterion of professional competence only. I would add that you do not consistently find this in the statistical laws of OECD countries. There is a lot of variation.