RMS and Customer Statements (revisited)

Is there a way in the RMS Close Billing Cycle area that we can filter on printing of customer statements? Example- we set up a customer code of N3- these are COD customers. We apply this to the additional tab within the customer record. When we print customer statements- we want to print statements only for those customers we have filted with N3 as a customer code. I can see where we can filter- but the problem is it only allows me to attach one customer record- rather than multiple records. In closing- this customer needs to be able to filter on which customer statements will be printed- because out of