I'm not sure, but I suspect that the charger uses Inverse Kinematics in the same way that other Poser figures does. When you load a person in Poser, IK is "on" for the feet by default. Obviously it is "off" for the charger. You can turn it on in the figures menu for arms and legs separately. When it is on for the legs, the character will behave the way you want in your post. As for selecting the character or the armour: In the bottom left corner of the preview window, There is a drop down menu where you can select the active figure. Select the appropriate figure (the charger or the armour) and then the body part from the "body part" drop down menu next to it. Make sure you selct the limb, and the armour will move with it. (I assume the armour is conformed to the figure already)