SEO for one page site

Hi

I have a friend who wants a single page website with several “pages” worth of info all on one page. He wants parallax scrolling from one section to the next.

How do I change the page titles for each section and make it look like a multi-page site to Google, etc?

Thanks

Mike

https://www.ads-software.com/plugins/all-in-one-seo-pack/