[Terran]

That's really easy:

Edit an existing page (e.g. the SandBox) and write i.e. PierreMarieBaty (this is called a camel-case or wiki word) and save the changes. Than you see a ? behind PierreMarieBaty which indicates that this page doesn't exist yet. Klick on the ? and the page will be created and you can edit it's content.
With koraX wiki you can also write [Pierre-Marie Baty] which would produce a similar result but without those ugly camel-case words.