Hi @nsjom,
The CC field is locked on reviewer request emails when one-click URLs are enabled to prevent those access URLs from being sent to other users. This is done intentionally and changing that behavior will require a code modification.
Adding more BCCs to automated emails will also require a code modification, though it’s fairly simple – it’ll be a one-line addition e.g. something like: $mail->addBcc('email@address.com');
Regards,
Alec Smecher
Public Knowledge Project Team