Multiple invoices payed by client in one bank transaction

Hi, I imported a bank statement with several transactions. A client has payed 3 invoices in 1 transaction and Manager connected them with the wrong invoices. When i try to correct this i can only select one invoice to match with the bank transaction while it should be (in this case) 3. What am i doing wrong, please advice.

Add extra lines to your edit but using the same customer name and select the correct invoices
0 AR Multi Line

Thanks @Brucanna, i overlooked de add button.