Printer controls (while idle)
If your printer is idle (not printing), you can control various aspects of it from the printer controls screen. First, select the printer from the dashboard and you will be brought to the Controls tab.
Here you can move the motors across each axis, heat up your extruders and bed (if available), run the fans, and view the printer terminal (which will show you what commands your printer is currently reading).
Printer controls (while printing)
You can fine tune printer settings while you print from the Controls tab. Here you have the option to control the fans, or try different settings with your print speed and flow rate. Or you can pause or cancel your print as needed.