AbleCommerce Shopping Cart Software

Hi, i need to give my customers the ability to parcel the order.

Ex: total:
1000.00
Payment Gateway: Visa
Parcels:
1 x 1000.00
2 x 500.00
3 x 333.7
etc

I think this is not currently supported by AC and i need to make a custom (and huge) implementation, yet ?

Thanks.

someone can help me ? thanks