OliveWP theme allows you to change the layout of the page, blog/archives, and single post.

Location: Appearance >> Customize >> General Settings >> Sidebar Layout

To change the layout of the Blog/Archives

In the Blog/Archive option, choose the layout for the blog or archive from the given layouts such as Left sidebar, Right sidebar, Content centered, and Stretched.

To change the layout of the Single post page

In the Single post option, choose the layout for the single post page from the given layouts such as Left sidebar, Right sidebar, Content centered, and Stretched.

To change the layout of the Page

In the Page option, choose the layout for the page from the given layouts such as Left sidebar, Right sidebar, Content centered, and Stretched.