Salzburg includes a footer widget area, where you can add widgets below the site’s content.
The blog index, archive, search, and single blog posts also include a sidebar widget area. The content will appear in one column (left-hand side), and the widgets in the other (right-hand side). It’s also a possibility to make sticky elements by utilizing a plugin like WP Sticky and drastically improve your visitors’ navigation. Apart from widgets, you can also set up a sticky header, sticky menu, navigation – basically any element that you’d prefer.
Simply go to Appearance > Widgets to add widgets of your choice.