Change Onboarding Assignee?

Summary

Can I change an Onboarding Assignee?

Content

I have an email notification that goes to the new hire with the Recruiter copied.  It is showing both of them as the assignee, which initially wasn't that big of a deal.  Now, there is also a part of the notification that says to the new hire - "as a reminder, your username is:_______" and pulls in the Assignee Username.

The problem here is that on the version going to the Recruiter, it is showing the Recruiter's Employee ID.  Is there a way I can keep the Recruiter copied on the email without being an Assignee?