AbleCommerce Shopping Cart Software

I have an application where the customer will not be paying in full at checkout. They may make 2-3 payments on the balance over time.

Any suggestions as to how to handle this one in Able Commerce?

Thanks

This will need some customization work, one solution you can try to place some text box on payment method screen in which user can specify the amount that he/she want to pay for installment and then you can modify the payment form code and reset the payment amount to entered amount then proceed with checkout. Order will be placed with remaining balance which customer can clear in upcoming payments.