1 deposit for 2 invoices

Hi MYOB Community,

Hope someone can assist me here.

I have a customer with 2 customers cards and has deposit monies for 2 invoices say $300/-.  Invoice #1 ($150/-) relates to customer card #1 and Invoice #2 ($150/-) relates to customer card #2.

How do I allocate/split the deposit receipted? 

I am using AccountRight.

Thanks for helping.