Bulk configuration can be done two ways:

1. Saving & Applying Template: You can save product configurations as a template and apply to any unconfigured product. You can save any product configuration as a template. A template can be applied to more than one products.

2. By applying a configuration to other products/configurations: You can do the bulk configuration for the same type of product. For bulk configuration, you must configure one product first manually. Then go to the configured list and you will find a “Apply To” button.

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After clicking Apply To button there will be a popup window.

Here are the details :

Collection name: You need to select a collection name. The bulk action will be applied to all of your product of this collection. If you don’t have any collection then you need to create them from Shopify admin

Background Image: You need to choose either a ‘product image’ or ‘uploaded image’ as background image. If you set product Image then the background image will be individual for each product. If you set ‘uploaded image’ then the background image will be the same for all product.

Background Image Position: Every product image has a position in Shopify. It is the serial number for every product Image. Like featured image is on position 1.