Welcome to Shopify Community. My name is Olivia and I work here.
Thank you for sharing your question in our forums. I was browsing around for any solutions or tutorials for you, when I happened to come across this similar forum post. Unless I have misunderstood part of your question, this tutorial for the Debut theme seems like the perfect solution for what you are after.
Please give this a try and let me know if for some reason this doesn't work for you and I'd be glad to continue chatting.