How To Send Files Through Gbwhatsapp

Whatsapp just announced the sharing of files through the platform.
I will like to give the step by step guide of how to shear document in GBwhatsapp for blackberry10 users and some android users who prefer Gbwhatsapp to whatsapp..
Go to the contact you want to shear the document with and click the second icon at the top of the chat and after it the document icon will pop up and you are good to go but remember that document can only be send to an Android or a fellow blackberry10 user