Hi,
I believe this will help you.
https://docs.generatepress.com/article/hooks-visual-guide/
You seem to be editing a static page. Please refer to the static page visual hooks image for hooks.
For pages, I believe you can use generate_after_entry_header
.
By the way, I’ve checked your page and you’re not using the page title/header.
I believe what you’re trying to do is make a shortcode execute under “Welcome to Park CP School!”?
If so, you must place “Welcome to Park CP School!” as the page title, else the shortcode would just appear above the “Welcome to Park CP School!” text because it is currently added as part of the content rather than the page’s header/title.