Three column theme

Now that my home page is restored, I am having trouble moving from 1 column to another. I am using a 3 column theme. When I am in pages, on the home page, is there a trick or a button that I use to go from column 2 to column 3 so I can add content?

http://www.privatespringwater.com

http://ww.wp.xz.cn/plugins/post/