With Live Presentations, each document is a meeting room! Multiple people can view and edit a presentation simultaneously. At any point of time, you can see who else is online on the presentation that you have opened and start chatting with them if you so desire. All changes made by other users are automatically merged in real-time to expedite the presentation lifecycle.
You can also use Live Presentations to replace single-point online meeting tools - just click on the "Invite to Presentation " menu button and you can invite other online users into a presentation mode where all your actions are propagated to other users - you can make a remote slideshow presentation for instance, complete with on-slide annotations. Unlike current meeting tools, all your slide transitions and animations are preserved in the meeting mode and synchronized across all user screens to ensure that participants have a rich user experience.