How to add one general button in TableViewController in Swift 3
<p>I need add one general or common button to my <code>TableViewController</code> like in picture. How to do this?</p>

<p><a href="https://i.stack.imgur.com/VhyOv.png" rel="nofollow noreferrer"><img src="https://i.stack.imgur.com/VhyOv.png" alt="enter image description here"></a></p>