Hi,

You need to change the page template layout, e.g. to make the html tables wider.
Here you can find more information: http://www.kentico.com/docs/devguide/page_layouts.htm

I would like to recommend you also to see our tutorial for portal engine templates - http://devnet.kentico.com/docs/tutorial/index.html and also Developer's guide - http://www.kentico.com/docs/devguide/index.html.


Best Regards,
Juraj Ondrus