Create a custom CMS page and assign it a layout created with a page builder?

[Peis]

Hello, i'm fairly new to prestashop, and i recently had to start managing an already existing store.

The website is running on prestashop 1.6.1.16, with this theme: https://www.leotheme.com/prestashop/themes/528-leo-otis-prestashop-theme.html with which comes this Page builder https://addons.prestashop.com/it/personalizzazione-pagine/20111-ap-page-builder.html#overview

My question is: can i create a custom page, and create that page layout using the builder?

The clients needs a custom page with some of the page builder widgets to display various specific products.

I created a page from Options > CMS, and assigned it to the menu, but i can't find a way to assign it the layout i want. I can only add content to it via the default wysiwyg editor...

Can this be done at all? Does that Page builder only works on the front page? This don't make a lot of sense to me.

Maybe i need to do something via code to achieve this?

Thanks to anyone who can help me clarify...