we have 3 default email templates in Email Template Layouts (displaying records 1-3 from 3) admin-email-template-layout would be nice for html/bcc editor in there to add images ect, as want to make my own helpdesk template
You can add new layout and put any html to it. Then you can use this layout for your helpdesk email messages. Best Regards.
You can choose BCC in email message configuration aMember CP -> Configuration - >Setup/Configuration -> Helpdesk -> (Edit Email Template)
I am afraid it is not possible to define BCC in email layout. In case you need to do it you need to specify it in email template. Please see my previouse messages. Best Regards.