Click on a circle in the map viewer to open the associated Cyclorama. The Cyclorama viewer will open next to the map viewer. Hold shift + click on a blue circle to open another Cyclorama. You can have multiple Cyclorama windows open at the same time.
Once a Cyclorama viewer is activated you will see a viewing cone appearing on top of the Cyclorama recording location symbol. The viewing cone shows the current viewing direction of the Cyclorama and changes shape and orientation as soon as you start looking around in the Cyclorama.