This function let you go trough you observing list sequentially and slew the telescope to the different objects.
If you want to slew the telescope to the objects you must be sure to use the observing list selection capabilities to get only objects in observable location right now.

You can use the button to navigate the list or the following keyboard shortcut:

The program also speak the current object name to the computer speaker so you can use this function without looking at the screen, even power off the screen, to preserve your night vision.