Exchange Coin is to Buy Bitcoins (BTC) with Ether (ETH), or to buy ETH with BTC, it's very easy & automatic &instantaneous.
Just click on "Exchange Coin" option and you will be directed to a page where you can exchange your coins, instantaneously .
(1) Click on Ether symbol and Enter ETH amount to get estimated BTC.
(2) Enter your BTC address to receive Bitcoin.
(3) Click on ‘Exchange coin’. You will get a Ether Wallet Id on your screen and send your Ether amount to your Ether wallet.,