Also from the manual:
To override a control’s grouping
Hold down the CTRL key while moving the control.
The control remains part of the group and functions as such once the CTRL key is lifted.

Read this:
 
https://www.soundonsound.com/sos/sep08/articles/vcagroups.htm
 
It is related to Pro Tools but it gives you insight as to why VCA faders are better than most grouping options.
 
You can send individual tracks within a group to a VCA fader including tracks from other groups and then control those tracks all at once too.  Individual levels with a VCA group can be tweaked at any time too.  Handy for drum buss mixes.
 
Studio One has just got them.  I used to wonder what all the hoopla was about but once you start using them you begin to realise how powerful they are and they are much more powerful than groups etc..
 
When you are controlling a group of tracks via a VCA fader the levels going into any side chain affects are also effected so they maintain the right wet/dry balance all the time.
 
You can even use a VCA fader to control a group of VCA faders as well in Studio One.
 
 
 
 
 
 

I do not dispute the added functionally VCAs may give but I do dispute how often they are really needed especially considering what is already available. 

John
I do not dispute the added functionally VCAs may give but I do dispute how often they are really needed especially considering what is already available. 

I watched S1 3.2 video the other day - and those folks were just blabbing about grouping stuff, and did not quite get it as I heard their explanations. Just ran the VCA fader and you could see the other fader go with it - but no explanation how it differs from ordinary grouping, so their demo was not the best.
 
But really good tools provide headroom with things there if you need them.
There is a reason if aiming for professional mixers that ProTools, Samplitude, Cubase, Reaper and now also StudioOne implemented it - four of them in the last year or so - was removed from standard ProTools for a while but now moved from ProTools HD again just six months ago, so Avid probably felt they would loose out to other daws not needing hardware acceleration so they moved it back to standard ProTools.
 
The more professionals that use a tool the more spinoff in consumer homestudio market too.
It does rank a tool depending on having VCA's or not.
Gibson Pro Audio - but no VCA's - don't think so.