CGI Reference number is located on the page that opens up once you click on the CITIBANK option.\

To go to that page...open your account, follow the steps as if you were to schedule and appointment...it asks all the visa details and stuff...just click next/continue/save......then you will go to the payments page where there is a link that says "view all payments options"

When you click on this link, a popup is opened. On the popup you have multiple options to click like...NEFT...Bank of AMerica...Citibank...AXIS Bank...and some other bank name.

When you click on one of these options, say CITIBANK, a new window/tab will open.....SAVE THAT PAGE (take a screenshot of that page and save it) ... that page consits of the fee amount and the CGI Reference number and instructions

You need to send this page to your friend to present it to the Bank person at CITIBANK.