All attendees join a GoToTraining session on mute?

Hello,

I believe in the classic version of GoTo Training, there was an admin setting available where we could set attendees to be muted upon entry that I no longer see in the new version.  Is there anyway this option can be restored?  Although there is the option to "Mute Everyone" once the webinar is started, it doesn't apply to late comers who join after that option has been selected.  It would be great to have this feature back to have better control of the background noise and people speaking out of turn.