How can I adjust a parameter/pot/setting/knob on an amp or effect in a preset in the Tone app?*
Navigate to a preset you'd like to adjust by selecting it in the preset list
Next, tap to select the chain item you'd like to adjust
Then, tap on the knob you'd like to adjust
A full screen will pop up where you can scroll up or down to make your adjustment. When you let go, the setting will be adjusted, and you can hear it on your amp.
Alternatively, you can scrub up or down vertically on the knob itself in the chain item detail view to make quicker adjustments. The smaller the movement, the finer the adjustment.