If you are using the Invoicing Option by default Spiro will wait to create the invoice until the end of the period (week/month). This means that no invoice will generate until the end of the period and it will contain all orders for that period. IE: If you are on invoice weekly and filmed 5 different orders in 1 week all 5 orders will be grouped on the invoice.

You now have the option to group or not group when using Invoice Weekly/Monthly. You can choose to create an invoice for each order and choose not to group invoices.