Polestar has a sidebar and a footer widget area. Add widgets at AppearanceWidgets. Polestar uses the classic Widgets screen.
Sidebar
The sidebar shows on posts, archives and pages that use the Default page layout. It appears only when it has at least one widget. Set its side at Sidebar settings.
Footer
The footer splits into columns as you add widgets. Four widgets make four columns. The stylesheet sets column widths for up to 10 widgets. On screens 768px wide or narrower the columns stack. To hide the footer on one page, use the Footer Widgets page setting.
Settings marked Premium need Polestar Premium.
Header
Widgets in this area replace the whole header. Use a SiteOrigin Editor or Image widget for the logo. Use a Navigation Menu widget for the menu. Polestar turns the Navigation Menu widget into a responsive menu for small screens, like the regular header menu.
Shop Sidebar
The shop sidebar shows on shop and product archive pages. This area appears only when the WooCommerce plugin is active. Set its side at WooCommerce settings.