When separate parameters is turned off for a parameter group, touching one parameter in that group will touch all parameters in that group. This is usually desired for the colour group because you will usually build your colour palettes using slotted colours and CMY and CTC. Having a colour palette with only Cyan in it, for example, wouldn't take full advantage of the palette system.
If you'd like to leave separate parameters turned off for colour and would still like to build handles for CMY, you can set the level for cyan, knock other colour parameters out of the programmer, and then record just cyan to a master which you can make into an IPCB fader. Wash, rinse, and repeat for magenta and yellow.
When separate parameters is turned off for a parameter group, touching one parameter in that group will touch all parameters in that group. This is usually desired for the colour group because you will usually build your colour palettes using slotted colours and CMY and CTC. Having a colour palette with only Cyan in it, for example, wouldn't take full advantage of the palette system.
If you'd like to leave separate parameters turned off for colour and would still like to build handles for CMY, you can set the level for cyan, knock other colour parameters out of the programmer, and then record just cyan to a master which you can make into an IPCB fader. Wash, rinse, and repeat for magenta and yellow.