Starting Tab - UITabBarController Swift iOS

I've just created a tab UIViewController in Swift, brand new, no code. I wanted to know how I could change which tab the app starts on. For example, it has view 1 and view 2. At the bottom it has two tabs, tab 1 and tab 2. How could I get it to where the tab and page it starts on is tab 2, view 2. Instead of always opening and starting on the first tab. Thank you for the help!