Board Thread:Support Requests - Designing Your Wiki/@comment-45720479-20200508000305/@comment-44807868-20200629043425

Yes, I'm afraid it's indeed not the right place. It's generally best to create your own thread for your issue. You can go to Special:Forum and click on the respective topic (e.g. Getting Technical) to post your own thread.

To answer your question, what you're looking for is tabber. Keep in mind, though, that the use of tabbers isn't recommended due to various reasons as seen under the Issues section. I'd suggest to just stick with headings instead, but that's up to you, of course.

If you've any further questions, then go ahead and create your own thread for it! :) Edit: Forgot to mention this! There's, however, an efficient method to separate information in infoboxes into tabs. See Help:Infoboxes. Letting you know since one of your examples is using tabber to do that.