An experience can be set as the default for a product collection, so every product in that collection picks it up automatically instead of being assigned one at a time.
The Experience settings panel has a Collection picker and an “Is default for collection” checkbox alongside the existing brand ones. A product with no experience assigned checks for a matching collection default first, then falls back to the brand default.
If an experience specifies both a brand and a collection, a product must match both for it to apply. Experiences that set only one of the two behave exactly as before.
One default per collection at a time — setting a new one unsets the previous. If a product belongs to several collections that each have a default, the most recently created one applies.
