I found the way to create an invoice from just one order, but I would like to be able to create the invoice from any orders at the same time.
The thing is many times orders are for a small value, and the client prefers to get the invoice for the total to be paid at one time, and not a bunch of small valued invoices.
This would also be a solution for me, because sometimes clients, when they have several invoices (instead of one) to be paid, make the payment for the grand total at one time, but making several wire transfers (one for each invoice because of the way their systems work) and I get charged bank fees for each separate transaction.
I would really appreciate your help. Thank you!
Ivana