Board Thread:Support Requests - Designing Your Wiki/@comment-32332506-20171015184704/@comment-26493471-20171015190016

Well, it depends... If you simply want to change the text of the admin or bureaucrat tag, you just have to edit a system message (MediaWiki:User-identity-box-group-sysop and MediaWiki:User-identity-box-group-bureaucrat). However, as long as I've understood from your message, you would prefer to create a new tag, wouldn't you? In that case, JavaScript is required (a comprehensive list of JS help pages can be found here). There's a famous script, UserTags, which can be used to manage tags, creating new ones...