Quick Trade section on the dashboard will relocate you to the quick trade section. 

Quick Trade section is a place where you can quickly and efficiently sell or buy your assets on demand. It is easy to use and to navigate. 

Firstly click on the "Quick Trade" button either on your Dashboard or your Wallet.

Note that the default trading pair is BTC/EUR. If you wish to trade on any other trading pair, click on BTC/EUR section and choose the desired trading pair from the drop-down menu or using the search functionality.

After you've chosen the trading pair, you can now opt into Buying or Selling the asset that is listed first in the trading pair. Write down the amount you want to trade.

Click on "Buy/Sell" to finish the transaction.