CMS Site Manager > Development > Page templates > New/edit page template category:
Here you can see a list of all page templates under the currently selected category. You can edit (), delete () and export () items in the list.
If there is a large amount of page templates in the list, they can be filtered by their Display name.
Help URL: http://devnet.kentico.com/docs/6_0/contexthelp/index.html?pagetemplate_list.htm