How To Change Theme Template

Steps

Open Sales Channels – In your Shopify admin, click "Sales Channels" from the left-hand menu to reveal available store views.
Navigate to Online Store – Select "Online Store" under your sales channels. This is where your active themes are managed.
Click Customize – Click the "Customize" button next to your active theme to launch the theme editor.
Select Page Type – In the theme editor, locate the dropdown at the top and select "Home Page" or switch to another template type if needed.
Go to Products – Within the template type selector, choose "Products" to view available product templates.
Create a New Product Template – If available, click "Create template" to make a new product-specific layout. If you don’t see this option, skip to the next step—your theme may already support customization.
Name the Template gang sheet – Enter "gang sheet" as the name of your new template. Then click Save to apply it.

Ensures compatibility between your Shopify theme and the Build A Gangsheet App.
Allows for specific styling and layout rules tailored to gang sheet functionality.
Improves builder reliability and prevents layout conflicts for custom products.