Automated invoice creation with agreements (multiple workorders)

Hi all,

We are having some problems with invoices in field service.

When we create an agreement and setup an booking and invoice recurrence it automatically creates the workorders. (the invoice recurrence is set to 1 invoice a month)
When we set the workorders to Closed-Posted the system creates immediately an invoice for this workorder.
This customer has multiple work orders they would like to have on 1 invoice and not an invoice for every workorder...

I thought that when you create an invoice setup all the workorders in this agreement would be combined on 1 invoice..

How is this possible?

Thanks in advanced!

Kind regards Dirk-Jan Forma