1. After logging into the invoicing system, add it to the invoice management.
2. There are my customers and my goods in the invoice management function.
3. If you want to add or modify the seller's bank account, click My Customer and add the corresponding information of the customer in the interface.
4. If the original customer needs to modify the account, click the customer name in the pop-up information box to modify the account, and then save it after modification.