Set up a recurring invoice

First write and finalize the invoice you want to repeat. It becomes the template: recipient, lines and payment terms are taken from it.
Open Invoices and choose Recurring. Or open the finalized invoice and choose Make recurring, which already picks that invoice.
Under New recurring invoice give it a Name, check the Template and set the Rhythm: monthly, every two months, quarterly, half-yearly or yearly.
Set First period from and, if the series should stop, Last period until. Otherwise leave it open-ended. Then choose Create.
By default each period creates a draft that you check and finalize. Under Automation you can switch on Finalize automatically and Send by email automatically, if your role allows both.
In the list you can use Run now, Pause, Resume or End. Ending cannot be undone. The list also shows the next period and every invoice created so far.