Combined Listings is new feature designed for Shopify Plus store owners, enabling you to
Benefits of Combined Listings feature:
You have two ways to use this features:
If you want to use an existing Product Group, go to the ‘Product groups’ tab, click the dropdown beside ‘Edit’, and choose ‘Convert’ to convert that product group to Combined Listings.
If you want to start fresh with a new group, go to the ‘Combined Listings’ tab, click ‘Create Combined Listing’.
Add the products you want to be included in the new combined listing.

NOTES:
When your chosen products are in another group, a small window will pop up like this.
If you click ‘Save’, the combined listings will be automatically published right after.
Click ‘Save draft’ if you want the combined listings to be hidden on the live store.
This is an example of preview in store pages.
A parent product generated by ‘Combined Listings’ should be added details for better Shopify SEO.
To make changes, on the dropdown of your combined listing, click ‘View in Shopify’.
Here, fill in specific information about your parent product: title, description, images, metafields, etc.
Enjoy this new and powerful feature. If you need any support on this, we are here to help.