The sag value is the most important value available at the minute in the garage for bike setup.
Having this setup right (spring weight and preload) makes a HUGE difference to how the bikes handle in the SIM.
That being said the easiest, and most common way to alter the sag value is with spring weight and preload.
Therefore to do so requires constant flicking between pages in the garage, as the preload and spring weight is available on the 'suspension' page, but SAG value is displayed on 'other'
Having these both on the same page, (sag and weight dist vakues display on suspension page)would make 0 difference to the operation and setup of the bike, but would streamline the process and make more sense in terms of layout.
Or even a page of their own at the end, such as 'display' or 'calculations' etc
Rather than being jammed with things that aren't relevant to their use