Thread:Project:Support desk/Protected Only One Page/reply (3)

That will be far more complicated and in the end it even won't help you.

You will need access to the file system of the server (you have to change LocalSettings.php), then you can add new user groups. See user groups. However, also if you put this user in a new user group, you will still have to protect the page in a way that he can't edit it, which with MediaWiki alone is not possible. Or do you want to take these users the right to generally edit pages in your wiki? If it is only for that one page, then you will additionally need some protection e.g. based on namespaces. This is possible with some extensions as well, but it is not secure, meaning there still will be ways to edit the page anyway. MediaWiki is not made for that kind of access control.

I would go for one of these two options: If the page basically should only be edited by admins, then protect it accordingly. If the page still should be editable for all users and you cannot accept them to be temporarily unable to edit it, then block the offending user.