The application comes with a side bar that you can use to navigate between multiple connections.
Swipe from the left margin to the right in order to open it :
Swipe from left to right on the left margin in order to open the side bar
If you want to close a connection from the side bar, you only need to swipe from right to left on top of that connection , in order to show the 'Close' option :
Swipe the opened connection in order to close it