In this selecting/changing section, you need to select the desired trading pair. There are three ways to do it. In any way, clicking on the desired trading pair will open its page.
Search using the quote currency
In order to search by the quote currency, click the ticker of the desired currency, for example, ETH. The entire list with all the available trading pairs, where ETH represents the quote currency, will be displayed.
You can return to the full list of pairs by clicking ETH again.
Search using the base currency
Start typing the ticker of the desired currency in the search bar. All pairs where this currency is shown as the base one will be displayed. Search is available starting from one letter.
If you want to return to the full list, clear the search bar.
Favourite trading pairs
Click the star in order to display only your favourite trading pairs.