When the Add products action is enabled, customers can add items to their order during the edit window. By default they can add anything from your catalog. With a curated product catalog, you can narrow that down to a specific, hand-picked list.
How it works
The catalog behaves as a simple allow-list:
Empty list = full catalog. Customers can add any product in your store. This is the default.
Populated list = those products only. Customers can only see and add products you've selected.
That's it. There's no partial mode.
Picking products for the curated catalog
Go to Order Editing Settings → Manage on the App blocks & edit actions configurations card.
Scroll to the Curated product catalog section.
Use the product picker to search and add products one by one.
Re-order the list if you want specific items to show first in the customer picker.
Click Save at the top of the page.
Products are added by product (not by variant). All variants of a curated product are available to customers, subject to inventory.
What's next
Hiding Products and Shipping Methods from the Edit Flow — the deny-list approach, plus hiding shipping tiers
Choosing Which Changes Customers Can Make — the "Add products" toggle that enables this whole section

