Board Thread:Support Requests - Getting Technical/@comment-46588300-20201022051055/@comment-44807868-20201022052033

It's currently not available on UCP. I'm not sure if it'll be available at any point in future either, keeping this in mind: "Under Fandom's UCP platform, use of TabView will be limited as Fandom intends to discontinue the extension. It is strongly suggested that your wiki does not add additional TabView code."

- Help:Tab view

I'd suggest creating a custom tabs template and having them link to the different pages instead. :)