How properly setup your dual monitor task panels with Mint Cinnamon

http://unix.stackexchange.com/questions/255156/how-do-i-add-a-task-bar-to-my-second-monitor-in-linux-mint

Once you have added the panel to the second monitor window, right click on the newly added Panel and chose ‘Add applets to the panel’. Then add the Window list applet to the panel but clicking the ‘Add to panel’ button.

The list of applications opened on the second monitor should now appear.