All Products Page
1. Click the checkboxes for the product(s) you want to be a component of the bundle, then click the "New Kit" button.
2. A modal titled "Create Draft Kit" pops up, where you can enter the Title (required) and, for each selected component, its Quantity in the kit.
3. Exit the modal with no change made, or click the "Create" button to create the new bundle as a draft product.
4. The new bundle product will exist as a draft product and you would be able to fill out all of its product details in the single item editor page (or through bulk).
Single Item Editor
The Kit Details section will be accessible by clicking the Show Kit Details link in the General section on item level, similar to the variation modal.
The Kit Details section will be displayed as part of the single item editor for any bundle product: