Navision can cater this scenario with Customer Posting Group. You can setup many Customer Posting Groups in Navision. By default, Cronus comes with 2 Customer Posting Group:
To setup the Customer Posting Group, go to Financial Management --> Setup --> Posting Groups --> Customer
To group the customer under a Customer Posting Group, open the Customer Card and then select the Invoicing Tab. Select a Customer Posting Group to group the customer.
OK. From this point onwards, whenever you post sales orders, invoices and credit memos, involvoing the customer, Navision will post the financial value to the respective general ledger accounts based on the setup done in the Customer Posting Group setup.
Please note that one customer can only has one customer posting group.