Busmaster CAN bus simulator -- "Function editor"

Hi,

This question is not related to CAN, but i am posting here because as
someone on the list may be using this tool. I need to simulate a node on
CAN bus

I am using Busmaster Version - 2.6.0.

I pressed the button CAN -->node simulator --> configure. Then add new node.
When i tried to add an empty C file to the node gets an error "open C file
created for CAN".

Then i searched in help file & found that" function editor" is used to
create LIN node files for bus master.

Is function editor similar to - CAPL Browser ?

I am not able to find how to open this "Function editor"  to create new
files ..?

Please suggest how to open function editor, in Busmaster if someone have
used it previously?

Regards,
Dinesh