Watching tutorial video in here: https://www.youtube.com/watch?v=7tcoyuM5K08&list=PLZSqbv2i8LOBCosw-vNCjyhmJ5BmrmCqA&index=34
You can go to Product Page > Sections > Product Recommendation
Then config for it:
Show product recommendations:
Select type to show:
It shows products with the collection list
How to config Link List:
Go to Main Product
You need to add tag with permanent syntax:
Permanent syntax: relatedt4_handle of menu
Note: With any menu will have different handle
And then go to Customize > Product recommendations > By Linklist
By Dynamic recommendations:
Dynamic recommendations change and improve with time. Learn more. You can add a section to your product pages that displays an automatically-generated list of product recommendations. Displaying recommended products to customers makes it easier for them to discover new products, and can help to increase online store sales.
In this section, the theme will take products with the same author.
You can config this feature in here. It has the same way config with the "By Product Vendor"