Group supervisor not getting e-mail notifications when clients respond

So the current problem that we are facing is that group supervisors are not getting e-mail notifications when clients respond (only agents).

Is there a way to CC a supervisor or another agent when adding new actions in Observer or supervisor rules?

All the options available are:

Send e-mail to agent, to group or to requester.

There is no option to Send e-mail to supervisor or another agent.

thx