Thanks for your replies!
As you say: it won´t work.
On a Licon, Scanco or any other desk I know I can use group dimmers so that I´m able to immediately dim down all lights in a group - whenever needed and whatever is running. I just need this simple function to use Cuelux on a lightshow where I don´t have to time to see which cues control my fixtures at the moment.
Like a "master bank" or so for e.g.: front light, back light, all heads, all LEDs, all hazers, all blinders a.s.o. Easy access with an "emergency button" would be helfpul. Or reducable like a cue-window so that you can see if dimmers are up or not and when you click it you´re on the master bank.
"The one that kills them all" (the Grand Master) is not suitable for this job.
Best regards,
Thomas