discounts by customer for different item groups

We are looking at bring a new product family into JDE and they have interesting discount rules. I've looked into the advanced pricing documents but can't determine if this requirement is possible.

SEE BELOW

one customer gets different discounts on different groups of items.

  

CUSTOMER	Item GROUP	DISCOUNT
2000	A	5%
2000	B	10%
2001	A	10%
2001	C	7%

 

ITEM	Item GROUP
1000	A
1001	A
1002	B
1003	B
1004	B
1005	C
1006	C
1007	C