The Flex Theme Tour (Veritcal Tabs) are implemented as a preset on the Visual Composer Tour Element.
Note: There are two presets, one for Desktop and one for Mobile. If you wish to have the first tab expanded on desktop and all tabs collapsed on mobile, you must place the tab element in twice in two separate columns, one set with the Desktop Preset and one set with the Mobile Preset, and set the mobile and desktop visibility. You can use the Visual Composer Copy Option to create the second instance and then change the Preset.
Add the Tour Element to your row.
Choose the Arrow Next to the inserted Tour to Reveal the Edit Tour Option
Click the Edit (Pencil) Link to open the Tour Edit Modal and then the Gear icon to reveal the presets. Choose GSU Vertical Tabs or V.Mobile Tabs and Save changes.