Use Airtable to add or remove products from collections
Adding and removing products from collections in Shopify is very easy using Airtable. To start, ensure that you have an Airtable sheet to which your products are being synced to/from Shopify, and an Airtable sheet to which collections are being synced to/from Shopify. Now, link the two sheets, and voila. If you add a product to a manual collection in Airtable, and run the Airtable to Shopify sync, then that product will be added to the collection in your store.