How To Display Featured Posts From Multiple Blogs?

[AndrewInCode]

I have multiple blogs on my Shopify site. I'm trying to display posts from ALL blogs on the site in the featured section on the homepage. However, when I attempt to select them in the admin area, it only allows me to select one at a time.

What do I need to put in the '{% schema %}' to allow me to select more than one blog in the theme's admin area?