The Canon 80D is a DSLR camera.
Aperture / Iris / f-stop
In order to adjust the aperture on the camera, the top dial will need to be in M (Manual) or Av (Aperture Priority).
When in Manual mode, the Quick Control Dial will adjust the Aperture setting.
When in Aperture Priority mode, the Main Dial will adjust the Aperture setting.
Shutter Speed
In order to adjust the shutter speed on the camera, the top dial will need to be in M (Manual) or Tv (Shutter Priority).
When in either Manual or Shutter Priority mode, the Main Dial will adjust the Shutter Speed setting.