Adding book like index pages for content on a page

Site URL: https://tricycle.org/beginners/buddhism/who-was-the-buddha/

Hello!

I was wondering if there's any way to do this on Squarespace:

So there's links on the left hand side of the page, which is fixed and the right side of the page jumps to the section click on.

All the content is within one page, or a gallery sort of thing should go back and forth as clicked on the link.

Hope this is clear?

Looking forward to know if anyone has a solution 😀

Kind regards and good vibes,
Pawan