1.You can Change the unConfirm the Confimred Quantity Using /SAPAPO/BOPI and /SAPAPO/BOPIN Transaction.
2.Check your Sort Profile and Change your Sort Profile.If you want to the Confirmation to happen according to the Delivery Date ,Material Date or Goods Issue.your Sort Profile Should be Modified.
3.You can use Percentage Criteria also Show Much be Confimed against Each Order in BOP
Suniel