Maximum bill amount

Hello,

some customers require to be billed up-to a maximum amount per bill. For example, while the customer should be billed 3500 euros, he asks to be sent invoice with a maximum of 1000 euro. Thus we should send him 3 invoices of 1000 euros and one of 500 euros.

I have no clue on how to do this. Any one would?

Thank you in advance for any hint and kind regards,

Didier