Use a subaccount
In order to use the subaccounts, you must associate them with your customers.
To associate a subaccount that you have configured with any of your customers, access the customer’s data and click the gray arrow inside the Operator field and choose one from the drop down list.
The documents of a booking, a quotation, an invoice or a credit note of that customer report the data of the subaccount you specified, and not your operator data.
When issuing an invoice, if you have decided to use a specific series for a given subaccount, you must remember to manually select it to create the same invoice.
We advice you to read this article: Manage the operator for a service, invoice or credit note.