For products, customers, and orders, you can also launch the bulk editor from your Shopify admin by selecting one or more objects from the list and then click More actions followed by Bulk Edit Custom Fields
The bulk editor works with a similar layout as the object editor, but with the added functionality that you now can select multiple objects (of the same type) and have each selected object appear in its own tab. Each tab will show the custom fields that belong to that particular object. Up to 50 objects can be selected at a time.
You can add additional tabs to the bulk editor by using the selection box in the right column and click Add.
In this example, two additional products have been added as tabs: