How to mark a transaction to bill payment

I have two bank transactions that are bill payments to my landlord. However, the amount is different from the total billing amount so QuickBooks didn't match the transaction and I can't find a way to mark these transactions like bill payments to the specific bills. Now, these transactions look like this in my rents payable accounts. How can I mark them as partial bill payments? I don't want to create new transactions because I will have another problem matching my bank records.