Once you have selected your Shopify products from the Product Catalog that you wish to list, you are forwarded to the Unpublished product page - where you can see the spreadsheet view of draft listings that are created within Multiorders itself.

By selecting multiple products, you will enable the Bulk Edit selection:

To apply the same value for all the products without the need to set up them one by one, you can click one of the Bulk Editor fields.

Example:

Let's say all the items you selected have the same Returns Settings.
1. Click on the Returns Settings field:
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2. A new window will pop up:

3. Select the Return policy of your choice, and click the Apply to selected Products button.

This will immediately update all your selected products with the same value you chose.