Group Email using GSuite Alias?

I have a Gsuite account. Main user email (what I use to sign in to Gsuite) is:

I have several alias domains associated with that User Email, including

I want to set up a group email so multiple users can send email as, however under group email settings, it appears all emails must be sent as the main G Suite email (

Is there a way to do this? Other than adding a second Gsuite Account? I can set the reply-to to, however that’s not really what I’m after, I need the emails to be sent as