In this segment from Bitwig's Let's Build an Arpeggiator tutorial, the host wires up randomized velocity into a custom arpeggiator patch using two modules from The Grid: Dice and Level Scaler.
Dice takes a trigger signal and outputs a completely random value between zero and one on each hit. That raw randomness is then passed into a Level Scaler, which maps the zero-to-one range into decibels, giving you musically usable amplitude variation rather than purely arbitrary noise.
The Inspector panel lets you watch the values in real time as they pass through, so you can dial in the min and max of the decibel range to taste. The host also points ahead to reusing the same Dice output to modulate filter cutoff and oscillator waveshape, showing how one random source can drive multiple parameters at once for a more organic, interconnected feel.