Meta Avatars SDK Getting Avatars Out of T-Pose

I am trying to set up a static 3rd party avatar with a custom hand pose. Using the CustomHandPose example scene, I was able to get the hand pose I wanted, but if I try it out in VR, it mirrors my movements and I want it to be static. However, if I turn off the body tracking, it goes back into T-pose. Is there a way I can just change the arm position to be vertically parallel with the body without it mirroring my movements?