Tabs and Panels (Accordions) are popular web elements used in framework such as Bootstrap, they are useful to show hidden contents and their use is straightforward. Some notes for their use:

• URL History for Tabs and Accordions: this feature is available from Uncode 1.6. You can activate the URL History permalink option so visitors can navigate from an external page directly to the specific tab panel or accordion. To do this simply enable the History option in the module settings and define a specific Slug for any tab or panel if needed, screenshot.
• Closed Panels (Accordions) on load: if you need your accordion is closed on page load please apply the value "0" to the Active Section option. At the same you can use this option to specify another panel opened on page load, screenshot.

NB: it's not possible to insert other Visual Composer element inside these modules, unfortunately this is a limit of the Visual Composer Page Builder itself.