Tech support for PoseWorks products was formerly given on his site, www.poseworks.com/smf, but he has not chosen to maintain it.
Shaders in DAZ Studio are applied in this manner. Select the figure or prop in the SCENE TAB. Then select one or more surfaces on the figure or prop. To select a surface, go to the Surface Tab (VIEW –> Tabs –> Surfaces). You can multi-select on the PC by holding down the CTRL button.
After you've selected the object and the surface, double-click the icon for applying the shader. You can find icons for the pwGhost product in the DAZ Studio half of the content tab in Shaders –> pwGhost_DS2 or pwGhost_DS3.