Problem with permalink

Hello,

For reference, here is my website:

https://moneythink.org/

If you hover your cursor over the “About” menu label and then click on “Board of Advisers”, you’ll see the page load with the following URL:

https://moneythink.org/advisers/

To better reflect the site hierarchy, I’d like the URL to be:

https://moneythink.org/about/advisers/

Problem is, whenever I try to add the “/about/” into the URL field when editing the page, it just converts to “https://moneythink.org/aboutadvisers/

As you might notice, there is no “About” page. It’s actually just a # link with CSS to disable the cursor effect, since I wanted the “About” to be a label, not a clickable page. Because of this setup, however, I cannot make the Board of Advisors page a child of “About”, which would add the “/about/” into the URL.

Any ideas on how to fix this issue?