How do refunds work from order history?

1. Open Orders in the left menu (web back office).
2. Find the paid order and open it.
3. Click Refund sale, choose By line (pick items and quantities), Custom amount, or Refund full bill, and pick the refund payment method.

Whether items go back to stock follows your restock setting (Settings, Inventory, or the branch override): it asks, restocks automatically, or does not restock. Manager rules may still apply on the floor for voids.