Sage Construction & Real Estate

I have tried creating a Parent client, then in the child Clients, setting the Referred by to the Parent. This should work in theory, but unfortunately the field referl.clnnum is not available as a selection criteria in the AR reports, only in the client…

I feel like I'm missing something simple but is there no way to get 3-2 A/R Receivable Invoices to automatically prefill the invoice number? When we create an invoice we can enter all the info but it won't let us save the invoice until the invoice number…