There are several ways to automate this.
- Set your Chargent Settings to automatically copy the billing address from the Account record, to the Chargent Order record, when the Chargent Order is created.
- Setup a Process in Process Builder to automatically populate the Billing Address fields from a different object or record.
If your business is not susceptible to fraud then we recommend you set your AVS settings to approve if the address doesn't match. This way when you send an incorrect address it will still approve or decline based on the credit card number.
If you need additional protection against fraud, you should always leave your AVS settings in tact as they will require a match between whats sent to your gateway and the billing address on the credit card.