Isolta's contact groups makes it possible to send one invoice to several different receivers simultaneously. So basically a group invoice. This feature is only available in Finland.
How to send a group invoice
Go to Contacts > Show contact groups.
Select New contact group.
Give your group a name and select Save.
Open the group you created.
Add customers to the group using the search field (Add contact to group).
Once all the customers have bee added, select New invoice.
The invoice is made and sent normally. Once you charge the invoice, it is automatically sent to all the contacts that are in the group. The sending method is based on the default that is selected on the customer's information.
Every customer that is added to the group must have a default method for charging an invoice. The method is selected when adding a customer to the group.
Group invoicing can only be used with electronic invoicing so the default method has to be either: e-invoice, printing service or email-service. You can not use group invoicing for printing out invoices or saving them as PDF.
Group invoicing is in Isolta's Premium-subscription. If you are using Starter, you can order Premium from your own account: Settings > Order. If you are using Pro, contact our customer support.