Regarding already created recurring payments (admin > orders > recurring orders). The Payment type field displayed in the Recurring payment details tab on the details page can be set to Manual or Automatic. When it set to Manual, the store owner has to manually click this Process next payment (create an order) button to process the new payment, when the Payment type field it is set to Automatic new payments will be processed automatically.
But how do you set whether or not to process the payments automatically?