Magazine widget

The default post display on my homepage is the latest post. So all posts display in one column, with the featured image on the left side and the post titles on the right side.

However, I want to change to layout showing in demo version of the free Poseidon. That is, one post in the left scolumn, and the rest on the right column. So I see there is a magazine widget in that kind of layout and add to the page. But how do I delete the default one to make the page like the demo Poseidon?

The page I need help with: [log in to see the link]