You can manage widget visibility to ensure customers only see products that are available in stock. Now, to set an availability navigate to the Settings > Manage Visibility .
Enable the “Manage Visibility Product-wise” field to manage product wise widget visibility. You can filter the list by collections as well as product tags.
Moving forward, you can either the Hide or Show:
– Hide: This option hides the zipcode widget.
– Show: This option shows the zipcode widget.
By clicking on the “Product Reset” button, all products will be updated to “Show” by default.
Refer to this video for more detailed information: