In the Zone Editor, you can create modulations by dragging a modulation source onto a destination.
Modulation sources have a modulation drag icon in the section header.
Procedure
When you start dragging, the label color of all available destination parameter controls changes to green, so that they can quickly be identified. If you want to drag a source to a parameter located in a hidden section, drag the icon onto the section button at the top to make the section visible and to gain access to its parameters.
Result
The modulation assignment is created. The label color of the parameter turns orange to indicate that the parameter is modulated. The new modulation assignment is added to the modulation rows of the source and the destination sections, and to the modulation matrix.