Credit Memo with a detailed breakdown? Negative Invoice amount?

SUGGESTED

Is there a way to create a in A/R credit memo that allows several line items?

Is there a way to create an invoice in A/R that allows for the balance to be negative?

I work in an office where, with-in 1 of our jobs there can be several invoices showing different things invoiced for different work (ie-insulation, siding, roofing work all all on different invoices but under the same account).  Sometimes we need a negative to be shown on an official print off with detailed information regarding addresses and amounts.  Is there anything in Business Works that could even remotely do what I'm asking?

-Melissa S.