Pedalboard provides eight Macro Targets—A through H—that enable you to map any parameter of an inserted stompbox. You can save different mappings with each Pedalboard setting.
In Logic Pro X, you use a controller assignment or create a Workspace knob for “Macro A–H Value.” MIDI hardware switches, sliders, or knobs can then be used to control the mapped Pedalboard Macro A–H target parameters in real time. See Logic Pro X Help for details.

Macro A–H Target pop-up menus: Choose the parameter that you want to control with a MIDI controller.
Macro A–H Value sliders and fields: Set and display the current value for the parameter chosen from the corresponding Macro Target pop-up menu.
Click the disclosure triangle at the bottom left to hide or show the Macro Controls area.
Do one of the following:
Choose the parameter that you want to control from any of the Macro A–H Target pop-up menus.
Each stompbox parameter is shown in the following way: “Slot number—Pedal Name—Parameter”—for example, “Slot 1—Blue Echo—Time,” or “Slot 2—Roswell Ringer—Feedback.” The Slot number refers to the position among the pedals, as they appear from left to right in the Pedal area.
Choose the “Auto assign” item from any Macro A–H Target pop-up menu, then click the appropriate parameter in any inserted pedal.
Note: The chosen parameter is displayed in the Macro A–H Target pop-up menu.