I have a supplier invoice that covers 2 bank transactions, how do I add the 2 transactions to the one invoice

Hello Waynefrost0711,

Welcome to the Community page, 

What you will need to do is record the payment on the invoice twice then match, or find a match in banking one at a time. Steps below to help you, 

If you go into the invoice and click receive payment on the right> then record the payment for the one transaction amount that came into the bank with the same date, account, and amount>save it then go to banking you'll be then able to match it. Then do the same again for the remaining amount on the invoice, record payment, make sure it has the same date, amount and account then go to banking and match it.