One way: Make everything that you want to move a separate prop. Import each one into Poser. If you parent each prop so that they are ultimately all joined, you can save them as a single prop file. The texture assignments can be a bit tedious with this method, but each sub can be altered using the Joint Editor and each axis moved to the logical location; then the rotation channels can be used for your movements and trans channels for sliding. Unwanted rotations can be locked at max/min = 0 and using EditPad, the unused channels made not to show.