Move all app windows to another work space in El Capitan On my home machine (which is still on Mavericks) I can load mission control and move multiple windows from a single app by dragging the app icon (instead of the individual windows) to another work space. 

This icon is not available in El Capitan, is there another way I can do this or at least a work around for it?
Enable “Group windows by application” in Mission Control preferences:



That will bring back the app icon in Mission Control, which would allow you to drag all windows of a given app between spaces: