ZBrushCentral

Need help plz

I am new to zbrush and cant seem to find something or make it work. I also use Poser and is related to this

I created a piece based on 3 subtools. Of course I can merge the parts together but then get only one items in poser with no subparts that I can use diff shaders on. What I would like to know. Is it possible to export a tool(+individual) subtools that are linked to one OBJ file. I hope I ask my question correct and you can help me

Thks in advance for all tips and have a great weekend all

stephan