Re-Renders are configured from the Re-Render window of the Renderer application and can be mapped to outputs as Live (real-time) Re-Renders or available for offline export only.  Re-Renders can be a variety of channel widths and be comprised of a full mix, objects, beds, or a custom mix made from user defined groups set up in the Input configuration window to create stem outputs. Live re-renders mapped from the Re-Render window are only available when using the Renderer Send and Return plug-ins within Pro Tools.    When using the Dolby Audio Bridge as the playback engine in Pro Tools Live Re-Renders are not available.