Expression Theme Categories Header Image

[gensun2021]

I am currently using the Expression theme for my Shopify Store. On my home page under "shop our categories", each category is pulling the collection featured image along with 2 individual product listing images.

I want each collection to just have the one featured collection image. I have reached out to the developers and it is a function built into the theme. Please advise as to how I can change that within the liquid code.

Please see the screenshot below.

Thank you