Thanks ALLSTEREO for you answering and your patience. I have used POSER for several years but have never rigged a figure from scratch. Dependencies are new to me but I am learning. I have dealt with MORPHS and I am learning BLENDER. I have the Track in BLENDER as I want it. In wireframe mode I can easily select individual tread elements but I am unsure how to define each as a group unless that means to "duplicate" each element so they each have a name - tread1, tread2, etc. If I export this to POSER I am guessing that I will need to retain polygroups so that when it comes into POSER - each tread is a different piece - correct? Does that mean then that each tread element would have a bone - which would mean I would have 40 bones with 40 treads? As you can see I am a newbie in this area. If there were a video explaining this rigging in Poser that would be great. I will also looke at the P17 in your manual. Thanks ALLSTEREO!

Windows 10 - Poser Pro 2012 - 64Bit - 24GB RAM - 4 x 3.40 GHZ processor