Yes. Either chose Wah > Volume in which case it will control Wah IF a wah effect is active. If there is no Wah active it will control Volume instead. In this case
Eave the pedal type set to Wah.
Alternatively, you can change the pedal type to Volume and it will be a volume pedal all the time.
The final step is to decide where in the signal chain you want to place the volume pedal. This can be right at the beginning (input), after Stomps but before Stack, after stack, before Delay/Reverb (in which case ypu can kill the volume of the direct signal but the delay and reverb tails will decay naturally) or right at the end in which case moving the pedal to heel will kill the direct signal and the delay/reverb tails together.