Strobe on a fader:
Couple of ways, but the way I use is the following:
Select all movers
Set Strobe to Full
Record Scene X
Under the Scene options, change it to IFCB. Make sure HTP is off and +Release Off
Now put the Scene onto a fader (Scene X Move Choose)
When you run the fader, it will be the slowest strobe at the bottom of the fader and the fastest strobe at full.
You can do the same thing if your strobe has a random function.