About Impact Analysis function(RTC V3.0.1)

Hello.

I've an question about Impact Analysis function.
Now I'm confirming the function( w/ Source Code Data function).

Then, I have confirmed dependency between COBOL Source and COPY book,
but could not confirm dependency between COBOL main program and COBOL sub program.

Can I find the relation between COBOL Main program and COBOL Sub program with this function ?
Do I need additional setting to Source Code Data definition ? (User Defined Data, etc ?)

The following video explains the function, but sample resources are COBOL Source and COPY book only.

Rational Team Concert 3.0: Source code data: gathering, querying, editing, and using the information to analyze dependencies
https://jazz.net/library/video/488


Thanks in advance,

Wiht Best Regards,

KITAJIMA Kenji