How Do I Use the “Multi Sets” Feature in YASR?

Hi,

I’m trying to use the “Multi Sets” feature in YASR, but I’m not quite getting how it works or how to set it up properly.

Here’s what I want to do:
I’m running a site with product reviews, and for each product, I want to have separate star ratings for different categories like “Build Quality,” “Value for Money,” and “Ease of Use.” I saw that Multi Sets is supposed to handle this, but I can’t figure out:

How do I create a custom Multi Set with these categories?
Once it’s created, how do I insert it into a post? Is there a specific shortcode I need to use?

Thanks