Does anybody know how to add SCHEMA to the custom code section of a page?

Hi, I have been searching the forum about SCHEMA implementation on Webflow and saw that @AlexN said:

“You can apply [SCHEMA] page wide schema in the head section of the page using the custom code section”

Source: http://forum.webflow.com/t/best-way-to-add-schema/20119

Essentially, I want to add SCHEMA to each page on http://www.geekwrapped.com for user friendliness and SEO benefits.

I couldn’t find any reference as to how to implement this page wide.Would love if somebody could help.

Thank you!