Edit Json Product Templates to Sell In Multiples or Steps of 12

Store Design

Topic summary

Author updated their Shopify store to the Refresh theme and created two additional product templates alongside the default. They want only these two new templates to force the quantity selector to add products in increments of 12, while the default template remains at increments of 1.

Key details:

  • Goal: Implement quantity “step” of 12 on specific templates only, without affecting the default product template.
  • Constraints: Prefer a code-based solution tied to those templates; avoid apps due to site speed impact, flaws, and monthly costs.
  • Attempts: Searched for a simple, template-specific method but hasn’t found one; tried various apps and rejected them.

Clarifications:

  • “Product templates” are theme templates assigned per product; “quantity selector” is the UI control for purchase quantity.

Status: Open request for a clear, code-level tutorial or snippet to modify only the two custom templates.

Summarized with AI on December 27. AI used: gpt-5.
1

I just updated to the Refresh Theme. I figured out how to add more product templates, but I’m stuck.

I have my default product template that I want to leave just as is, but I made two more templates. I’d like THOSE two new templates to change the quantity selector to sell in multiples or steps of 12.

I’ve searched as much as I can, but I can’t find a simple solution to edit JUST Those two templates so all of my other products just sell/can be added to the cart in multiples or steps of 1 while my custom products/templates sell in multiples or steps of 12.

I’ve tried a variety of apps and they all slow down my website loading speed, have flaws/issues, or are way too costly per month so I haven’t even tried them. Does anyone have an easy tutorial/way to show me how to edit code on these two produ