To change global site settings, click the "site settings" button from the site builder toolbar.
Global Site Settings dialogue will pop up, from which we can change the global content template, global directory template, and page code injection.
The global content template will be used by all content pages by default unless you have given a specific page template to a content page.
We can choose between a blog page layout and a documentation page layout.
The global directory template will be used by all directory pages by default unless you have given a specific page template to a directory page.
At the moment, we can choose from the following directory templates:
We are able to inject code in four places of every web page:
This should give you the maximum flexibility so that you can do whatever you want.