OP-Z CTRL 1.0 is a midi max for live device to control the OP-Z.
The UI is divided in the main sections of the hardware, Sound, ADSR, LFO, Note and Master.
There is a Preset storage section where you can save up to 44 presets within the Live project.
And finally there is a Randomize section where you can define where the randomization affect by sections: Sound, master, ADSR, LFO and Note.
You can use one device per voice. Be sure to put the device in a MIDI channel and configure the MIDI Output to route the desired OP-Z voice.
Don't hesitate to contact me if you find any problem or if you have an idea to update the device :)