The Pagebreak button in DJ-Catalog2 is managed by the DJ-Catalog2 Pagebreak plugin. It allows to separate from the content (text above first pagebreak), named sections which will be displayed in divs, tabs or accordion (depending on the plugin settings).



This plugin comes free with the subscription of the extension.
You'll find it installed (you may need to enable it manually) after extension's installation, alternatively it's available in downloads section (available for active subscribers).