Can you use this software to change the pose of the model without changing the volume/shape.
There will be an autorigging tool that will do exacly that later but for now - no.
If your character has asymmetric shape, and your goal is to make he/she symmetric, then you can use FixSymmetry node in Wrap3:
https://vimeo.com/187608159
Is your source model a scan or a low-poly mesh? If the former, you can use Wrap3 to fit some low-poly basemesh to it, then use any autorigging software (for example free Mixamo service https://www.mixamo.com/auto-rigger) to autorig the character and change his pose.