Catalog - Full Control

You need permission to update Shopify product changes to a Catalog
To be able to update your Shopify product to a Facebook Catalog, you or your clients must have Full Control permission.
If you own the account that's assigned with this full control, then you will be able to directly sync product to a catalog.
If you don't own such accounts, you can generate a data feed file that's dynamically updated, and pass that file link to the person who have access to the catalog!