The 4th and 5th video is ready and waits for rendo's approval

Spline breaks. When you set a bend or morph, poser will try to make it a nice smooth motion - in graphics terms a nice curved line. But in our simulation we start at a zero pose, then add morphs and then the pose. We do not want a smooth curve for those. They have to be fixed (you do not want the voluptuous morph to change beyond its setting and you do not want to take the movement from zero pose to fixed pose to influence the pose.) So what you do is set essentially a breakpoint at those frames for the figure. This is the spline break. You cut off the curve at those frames to fix them at that position. If you do not do this, there is a change that a morph or bend will "overshoot" its goal in order to make a nice curve. The spline break prevents that If the figure is selected in the left column and you click on the little square on the right frame it will put the spline break in for the entire figure

I hope this helps