Switching Devices of Expression pedal

I want to be able to switch my expression pedal from my volume device to my wah device on the same preset. Can this be done by creating 2 scenes and switching which device is on or off? Is there another way to do this?

Yup, switching scenes is one way. You can also assign multiple blocks to a footswitch. Wah and the volume block on the same footswitch with one engaged and the other bypassed. Then switch between them.

Lastly you can get an expression pedal with a separate output for the toe-switch and use that.