How to Add Second Navbar Under First Navbar?

Is it possible to add a second navbar menu under the first navbar menu? It is for my website:

I would like to add this functionality as a custom plugin, not by child theme. Is this also possible?

Thank you. The Revisionist.

Hi Revisionist,

I hope you are well today and thank you for your question.

To achieve this you have to develop custom code as described in the following topic.

Best Regards,