Thread:Project:Support desk/Portals/reply

Just for reference to others, you're following the Portals manual.

To understand what templates are and how to use them, see Help:Templates. Basically,  tells MediaWiki to substitute it with the contents of Template:box portal skeleton. But the page Template:box portal skeleton must exist on your wiki beforehand!

You may need to copy that template from wikipedia, and other required templates for having it working.