Tracking number generation in GoCargo Theme pls help

How do I generate tracking numbers in GoCargo?
I built a website with GoCargo theme, I have put in shipment details but I can’t generate tracking number for the tracking.
Somebody should help me generate the tracking number.

My website url is:


For any technical query about theme functionality the best choice will be contact theme Author and let them know How to Contact your purchased theme Author, theme author will be happy to answer your query.