Form your career web the way you want it. Create campaign pages for your different departments, teams or roles. Add them to your main navigation and make it easy for candidates to find them.
When you create a page, click "Show this page in the navigation". Note that it will not show up in the navigation until it is published.
If you want to add an existing page to your navigation, hover over the page and click the cog wheel. Click "Show this page in the navigation".