Hello Ramesh,
I do not know if there is such a document.
I know one thing for sure that you do not have do anything on your VuGen installation to make it work.
Just install and it works.
No license key to enter, no license file to import or what so ever.
The new Loadrunner 12.00 comes with a free community license with a perpetual 50VU bundle.
Download is also free.
Only one side note: You can only install Loadgenerator and Controller on the same machine, not on seperate machines.
I suggest you use Loadrunner 12.00 with the community license.
Read the readme's and decide if this is what you are looking for.
With kind regards,