you have to do page 2 prior to page 1 ?? Page 2 has the Color space option.
you will be in for a world of pain if attempt to adjust the 9 point gamma adjustments.
The CMS controls are basically hue controls. You will not get the primaries perfect. All of them will only be moved 1-3 clicks for maximal improvement. Please note that if you move them too far (ie: green) you will start to affect your gray scale.
I would calibrate the Pure mode first (and get familar with the controls), then do the ISF day and night modes. the settings of each mode should be very close to being the same.