If there are no components displaying in the WordPress customizer for Jumbotron you may not yet have the default Siuy homepage template configured and set as the front page of your WordPress site as the Jumbotron customizer settings will only display if you have this page template set as the front page of your blog.
- Create a new page, by visiting Pages » Add New.
- Set the page title and then from the Template drop-down in the Page Attributes meta box select Homepage template.
- Publish the page.
- Navigate to Settings » Reading and set the newly created page as a front page.
The page that you created and added the homepage page template to will now be displayed when anyone visits your site's homepage.