You can apply a Randomizer to any property that has the Randomizer icon. By default, the Randomizer is disabled, but you can easily enable it and modify the properties to create the desired effect.
To enable a randomizer:
Right-click the text box or slider of a property that contains the Randomizer icon.
A shortcut menu is displayed.
From the menu, select Enable Randomizer.
The Randomizer view is displayed and the Randomizer icon in the text box turns yellow.
You can also double-click the Randomizer icon to open the Randomizer view.