Publishing or exporting a project using Share menu options (except for Export Movie, Export Selection to Movie, and Save Current Frame) opens the Share Monitor application in your Dock.
Note: The Export Movie, Export Selection to Movie, and Save Current Frame commands render in the foreground; background rendering is not available for these commands.
You can click the Share Monitor icon to monitor the progress of the rendering process that’s creating your output files. A number appears on the icon to show how many files are being rendered. If there is an issue during the rendering process, the Share Monitor icon bounces in the Dock.
For more information on using Share Monitor, see Share Monitor Help.