Bundles, or Sales Bundles, are digital objects used to allow a customer to order several things with one click, but which don't sit on a shelf as a completed "Kit" at Amplifier.
When a customer orders a Bundle, the Order Data conveys a line item for each item in the Bundle, and Amplifier picks each unit that makes up the Bundle.
Because Bundles aren't physical items on Amplifier's shelves, the components of Bundles remain available for sale.
There is no configuration on Amplifier's side for a Bundle. Bundles are configured in the client's store at the client's discretion.
Sometimes users confuse "Kits" with "Bundles" or "Cases". Make sure you're aware of the options between them: How to decide between a Kit, a Sales Bundle, or a Case Unit of Measure.