[Macro & Function buttons] Create a button on service call that create an invoice

The customer uses service calls, and creates invoices tied to the call, but is tired of the long process before the invoice is ready (Expenses tab > Expense Details > New Document > Invoice > Ok = 5 clicks). 

• Create a button on service call that create an invoice Sample Package.bcp2 KB
• Create a button on service call that create an invoice.pdf500 KB
• 10 - Agregar un botón en la llamada de servicio que cree una factura.pdf500 KB