I'm creating a parts manual in Word 2010 and would like to know if it's possible to create a multi-level table of figures. I have a top-level assembly drawing which contains several part and sub-assembly drawings which I would like to be reflected in table of figures i.e.

Drawing 1: Top level assembly
A. sub-assembly or part
B. sub-assembly or part
C. sub-assembly or part

Drawing 2: Top level assembly
A. sub-assembly or part
B. Sub-assembly or part

Is this possible? If so how do I set this up? I'm pretty new to this Word 2010 functionality.

Thanks in advance.