All coupons have a Redemptions table that lists accounts that have redeemed the coupon. If an account has redeemed the coupon more than once, you will see a Redemptions count greater than 1 for the row and multiple Redeemed dates. The Total Discounted column reflects the total discount amount from the coupon on that customer's account across all redemptions of that coupon.
If the coupon is a bulk coupon, you will see a Not Redeemed table. This table includes all unique codes that have not yet been redeemed. You can hover over the right dots in any row to Expire Early the unique code. Any expired unique codes will be at the end of the table list.