Navigate to the current wiki page you want to add the new page to.

Open the editing area of the current page by hovering over the menu on the right hand side and selecting the pencil icon that says Edit this Page.

Find where you want the new page listed, and type the name of your page in between a set of double brackets [like this but with two on each side]. Save the page that you are working on.

Your new page link will appear in red. Click on that link, which will take you to a page that says “This topic does not exist yet,” or “This page doesn't exist anymore.” Find the icon on the right side of the page that looks like a pencil with a plus sign that says “Create this page,” and click on it.

Enter content and save your new page. Add formatting as needed (slashes to make the following text appear on the next line, equal signs to create headers, etc).

Your link will now appear in blue on the page where you started.