It has 3 layout options: default (no bottom widebar), without sidebar and with botton widebar (homepage). You need to create 3 pages (bottom left, bottom center and bottom right) for your homepage widebar content, in case you use homepage template.
The sidebar search box is designed to work with the I18N Search plugin and the Keywords Search plugin. It can also work without it, but you will no be able to use the search option in the sidebar.
Extract archive to your getsimple's /theme directory and enable it in GS administration panel.