Help Center
Size Guide
The content
The size guide content is just a custom page. Create a new page with Gutenberg and add a table with the sizes information.
To get the same style from the demo content select Stripes style. And in the Advanced section add the custom class size-guide
See both options in context
The settings
Global settings (Customizer)
The global settings applied to all products are Appearance > Customize > Single Product > Side Guide
Size Guide Page is the page created in the previous step.
There are 2 basic filters: Add to Variable Products Only or select specific categories.
Otherwise, apply to all products.
Per product settings
If you have more than one size guide you can link a different page to override the global settings.
Edit the product, scroll down to Extra Content and select another page in the Size Guide section