I will start by saying that I'm not a programmer but a tweaker of code and for the most part that has served me well. On this project: https://hasa.designintense.com/, I have created one long page that is actually made up by several pages that are pulled into one using widgets in this WordPress theme: https://organicthemes.com/demo/business/
I'm happy with the page but I need a navigational sidebar like was used for previous years: https://hasa.org/2021-annual-report/ and that has me stuck.
I tried making a new page with a sidebar and pulling in the main page as an iframe: https://hasa.designintense.com/sidebar/ but that doesn't work at all. I'm trying to get something like from last year (I did not create that or I wouldn't need to ask lol).
So maybe there's just some tweaks to the code I need but I'm also open to a plugin or any easy solution to integrate. If it needs to be custom programmed then please let me know so I'm not wasting time.