Our invoices have to be setup with multiple project groupings on one invoice. I have not be able to replicate the below structure on an invoice. Would it be best to try some sort of custimization or interface with Creator to create an invoice that is setup as shown in the following example:

Project Group A
	Project Name A
	Description of Project A
		John Doe	5	100	500
		Jane Doe	4	100	400
		Total			900
		Discount			400
Project Group B
	Project Name B
	Description of Project B
		John Doe	3	100	300
		Jane Doe	2	100	200
		Total			500
		TOTAL			1000