ad 1. The chapter Expression Pedal and Foot Switches in the Main Manual explains all the pedal possibilities in great detail and with graphics. There are also video tutorials related to this subject. Multiple pedal controllers can be assigned to one pedal. The Morph Pedal can also control Wah and Pitch Pedal. The exception is Morph and Volume Pedal. The philosophy is to keep all pedal assignments global. We don't want pedal assignments, input routing nor output routing stored with in the Rigs, because Rigs should be compatible with every user's environment for easy sharing e. g. via Rig Exchange. However, you can Morph Rig Volume or other volumes within the Rig e. g. a volume in an effect..
ad 2. There is no input volume as such. You can Morph a volume pre Stack e. g. in an effect placed in Module A. However, you can also place your Volume Pedal at location Input and that Rig-wise. You can also use a Wah Pedal Booster in the Modules A-D:
ad 3. This is what the manual says: ·You can erase Morphing of anyparameter by turning the morphed value back to the base value.
Pedal assignments and pedal links are intentionally global. It is a must that Rigs can be shared and work right from the beginning in everybody's environment. However, the setup of Wah effects is local, the setup of Pitch effects is local, the Morphing parameters are local, and location as well as range of the Volume Pedale are local.
Please read the chapters Expression Pedals and Foot Switches as well as Morphing and the related video tutorials to familiarize yourself with the many possibilities. All applications are covered.