Board Thread:Support Requests - Designing Your Wiki/@comment-26418565-20180417173455/@comment-26478829-20180418000138

Non-staff can't edit MediaWiki pages I'm afraid.

Basically just copy the code you put in the template and paste it on this page (or this page if you want to affect all skins). On the template's page, click on "History" and click the "Undo" button.