Positioning Extruders after Tool change : Marlin 1.1.6
Interesting project your are working on.


  Does it work with normal dual extruders.?(Does mine come under any two
  system mentioned above?)


The hotend/extruder you mentioned above is a E3D Chimera like system. And it is not suited for your application because you cannot lower/lift the hotends independently from each other.

examples of these configurations


DUAL_X_CARRIAGE:


look at BCN3D sigmax dual extruder

SWITCHING_NOZZLE:


look at ultimaker 3 mechanism for lowering/switching the active hotend.



The above systems aren't well documentend and will be hard to make. 
I advice you to look into an interesting blog post from E3D about a tool changer. It is opensource, well documented so you're be able to create one yourself with tool heads for your application. A spade to create patterns in the powder. And a liquid tool to fill the patterns.