You set up a chrome profile for archiving that's logged into all the sites you want to save. I recommend using burner accounts dedicated to archiving, so you'd have to add them to any private pages/groups you want to archive.
It is possible to use your main account for archiving but there are security risks (you cant share the snapshots without leaking session headers).
It is possible to use your main account for archiving but there are security risks (you cant share the snapshots without leaking session headers).