Hi,  I was wondering if it was possible to mask out certain body parts within motions.  For example, if I use Motion Puppet I am able to mask out the legs, body etc...But if i was to use a motion of a guy walking and moving his arms about from any of my purchased animations, could I use this animation and apply it to a sitting character and only use the arm movements and not the walking motion? I know that I can remove the animation from within the timeline by right clicking and using the 'remove motion > Right Leg' but the character would still be standing and i'd then have to move the character into the sitting position using the edit animation function. 
Any tips anyone?