How can I display only related products from the same collection?

I Have the “Trademark Theme”. I am trying to set up a section that shows more products that are in the same collection as the product that is being viewed. It does have a “related products” section but it is showing products from other collections as well. Does anyone have any advice on how to set this up properly?

@MatthewChandler

Sorry you are facing this issue, it would be my pleasure to help you.

Welcome to the Shopify community! :blush:
Thanks for your good question.

Please share your site URL,
I will check out the issue and provide you a solution here.

Here is my site url:

https://leather-and-more-in-hickory-nc.myshopify.com/

Thank you for your help

@MatthewChandler

thanks for URL

can you please provide screenshot where do you have add more products or collections?