Negative payments

I have employee vendors where we will be paying via F110. We have some charge back amounts that will be posted as debit (PK21) and have no credit items. So i will always have a debit balance on this account. I wanted to able to pick up these items and send to our bank via our payment run and this item will never be included for total balance when new items are entered. Meaning i should be able to pick up debit items in my payment run and once i ran the payment run these debit items should never be accounted as open item.