"quick add" button on only one collection in Dawn

You need to either:

  • modify the logic of the collections card-product.liquid snippet so the quick add form isn’t even rendered to the frontend
  • or use a CSS bandaid in a custom-css setting with an alternate templates. The form will still be sent to the frontend but not displayed.

CSS example for all the other collections to now show the quick add form:

.quick-add product-form { display: none; pointer-events: none; }

https://help.shopify.com/en/manual/online-store/themes/theme-structure/extend/add-css

https://help.shopify.com/en/manual/online-store/themes/os20/theme-structure/templates#create-a-new-template

If you need this customization setup then contact me directly by mail for services.
Please always provide context, examples: store url, theme name, post url(s) , or any further detail.
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