When I am tracking a show, and using the Speaker Timer as an external display for the presenters, if each presenter has more than one row, there is currently no way that the Speaker Timer acts as a master countdown for their entire presentation. It starts a new timer for each row, and the mute duration feature is actually useless in my opinion, if it does not actually keep the previous countdown running. This is also the case for Groups - which is a cool feature but it doesn't reflect any "master clock" for the overall group. That would make the Speaker Timer actually usable if this feature could be added. Even if just for Groups. Right now it would be way to confusing for presenters to see their presentations broken into smaller times, and there would be no way to let them know they are over their overall aloted time, if they still have several rows to go.