How to upgrade from Myeasi to Myeasiest?

The difference between MyEasi (Electronic Access to Securities Information) and MyEasiest (Electronic Access to Securities Information and Execution of Secured Transactions) is that MyEasi only allows Demat account holders to view their demat account details, while MyEasiest allows demat account holders to submit off-market instructions and transfer shares from one demat to another. The demat account holder need not submit a DIS to their depository participant (broker) for the transaction if done through the Easiest portal. See, How to transfer shares from ATS demat account through easiest?