Ved Prakash Anand,
Once you log in, go to this page: http://www.indiastudychannel.com/members/EditPaymentPin.aspx
This is accessible via your Dashboard >> Manage Account (which appears under 'Manage Profile' heading >> Manage Payment & Revenue settings (the fifth link from the bottom in the list on the manage account page).
On the Edit Payment Pin page you will see a box to enter a PIN. It will be known only to you and the Webmasters and is required as a security measure for payments.
1. Those who have an AdSense account & are earning AdSense through their ISC contributions can see at that page their revenue share period.
2. In case you wish to get a payment only when it reaches a high level, you can set that as well on the same page.
When people come at you with their worst, you should come at them with your best (advice given to Selena Gomez by her mother, quoted in Time magazine.)