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Assembling imported STEP files using RobotStudio Add-in

Hi everyone, 

         Is there is any possibilities to create Add-in, which helps to assemble the imported STEP files in RobotStudio environment.

               1. I select a point on a face of Part 1.
               2. Then,  I transform part 2 to the point on part 1.
               3. After transforming the part2, I see the part 2 origin and the selected point of part 1 is same.

I need guidance on: check the faces of 2 parts, then transform and orientate the part2 based on face of part1, (assembling operation like SOLIDWORKS ) 

Thanks in advance.