The Collection field doesn't change a value on the product — it adds matched products to a manual collection or removes them from one. One run, one collection, every matched product joined or left in a single batch.

Manual collections only. Smart (automated) collections build their membership from rules, so this edit can't push or pull products in or out of them.

Step 1: Pick the Collection field

In the Configure Product Edits panel, click Select Field.

The Configure Product Edits panel with the Select Field button marked

Collection lives under Product Fields.

The Select Field modal with Collection marked under Product Fields

Click it. The configuration panel switches to two Action radios — Join Collection and Leave Collection — plus a Collection to join search input.

Configuration panel after picking Collection: Action radios with Join Collection selected and a Collection to join search box below

Step 2: Pick join or leave

Join Collection — every matched product gets added to the collection you choose. Already-in-the-collection products are no-ops.
Leave Collection — every matched product gets removed from the collection. Products that aren't members are no-ops.

The label on the search input updates to "Collection to join" or "Collection to leave" depending on what you pick.

Step 3: Search for the collection

Type into the Collection to join / Collection to leave input. The app calls Shopify after a short pause and shows matching collections in a dropdown.

Collection search with "Home" typed showing the [EDITED] Home page result in the dropdown

Click the result you want. The input fills with the chosen collection's title and a small × appears on the right to clear it.

Configure Product Edits panel with [EDITED] Home page selected as the collection and Start Bulk Edit Now enabled

Only manual collections show up. If a collection name you expect isn't in the dropdown, it's most likely a smart (rule-based) collection — those are managed by their automatic conditions and can't be bulk-joined or bulk-left from here.

Plan-gated. Each plan caps how many collection edits you can run per task. Hit the limit and the run is blocked — upgrade or break the work into multiple runs.

After the run

Join is additive. Running it twice doesn't duplicate the product in the collection.
Leave silently skips products that weren't in the collection to begin with — that's not a failure.
Collection changes are reversible from the History page using Undo.
Want to move products between two manual collections? You need two edit steps in one run — one Leave, one Join — using Add modification.