In V5, how do I add a second product price tier and confirm that it has been saved successfully?

1. Click "Edit" in the top right corner of the product details page to enter the editing view and add or adjust price tiers. 2. In the "Distributor price" category, keep the first tier with MOQ 100 and price 10, add a second tier with MOQ 500 and price 8, and save after completion. 3. Return to the details page and confirm in the "Price tiers" section that both MOQ and price entries are correct, and verify that a "Changes saved" notification appears.