Kumar
Just click once on the lefthand colomn. I've noticed that if you open it in a new page, it goes back to the main page.
How long is the piece you want to use? If it is not that long, and if you have 3-core cable on site, (size you want to use and bigger than 3kV) strip the cable and use the tails. Just remember to strip semi-conductor jacket also and to clean it.
Regards
Ralph