The Sell module contains a customer address file. This file is maintained using the customer address tool:
Herschel can hold up to 999 addresses for each customer. Each address has its own number. These addresses can be used for either despatches or invoices, or both. If necessary the same address number can be used for both despatches and invoices.
If you have lots of customer information in another software package then you can use the import customer details option to save time: