Within the Oxley theme, there are three areas into which you can add widgets to customize your site: Sidebar, After Content and After Footer.
Content only displays in these areas if widgets are added. See Adding Widgets for instructions regarding how to add a widget to a widget area.
See below to preview where the widget areas display on the page once content is added.
This is the typical widget area available with all U.OSU themes. When widgets are added, it appears to the right of posts and pages.
Specific to the Oxley theme, this widget area appears below individual posts, pages and attachments. It appears above the comments area.
Specific to the Oxley theme, this widget appears directly above the site footer.