Please consider implementing the use case you are looking for using a LivePage.
The Kanban Demo is not intended to be used as-is; its primary purpose is to showcase various features of Polarion ALM solution and how to combine them together to have Kanban-like reports and metrics. In order to use it in production environment the founding blocks of this demo need to be reconfigured and integrated with existing environment.
The one Kanban Board with all the reports and metrics is just for the demonstration purposes and in the real environment it is recommended to split it up.
See blog posts http://blog.polarion.com/kanban-the-polarion-way-part-1-what-is-kanban/ and http://blog.polarion.com/kanban-the-polarion-way-part-2-polarion-as-a-kanban-board for more information about Kanban and Polarion.