Hi Norse Stone,
Currently there is no option to setup an automatic Cc address on estimate forms, you would need to manually enter when creating the transaction.
As a workaround you are able to setup customers with multiple email addresses within the customers settings, so can enter the copy address here and this will automatically populate within the email box when selecting this customer on the estimate.
If you would like to leave this as a product development request please do so by going to the Gear icon > Feedback within your account :)
Thanks!
