Schema Markup JasonLD

“Is there a way to extend/add to the existing schema markup on posts and pages, so that one comprehensive schema output is generated?”

There are two ways:

  1. HTML Cards
  2. Post Code Injection (Use the Post Code Injection in the right Sidebar in the post or page you are editing and not the Main Code Injection).

I prefer the Post Code Injection.

I had a similar problem and Cathy helped me. You might wanna check this post out for further info:

What is the Best Way to Add FAQ Schema?

I hope this helps you.