user18258: On YouTube, when the person in the video has another video as a reference to show, in the upper corner is shown a link that directs what they want to show.
This is a example:

I have some videos that I would like to do, but I do not know where to do it on YouTube.
Does anyone know the name of this and how can I add it?

user11523: It is in:
Creator studio => Video Manager => (Select Video) => Card (or "End screen & Annotations")
There you select time and click on "Add element" button. Now you can choose, what you want to add.


18258: <p>On YouTube, when the person in the video has another video as a reference to show, in the upper corner is shown a link that directs what they want to show.</p>

<p>This is a example:</p>

<p><a href="https://i.stack.imgur.com/Fn9Pi.jpg" rel="nofollow noreferrer"><img src="https://i.stack.imgur.com/Fn9Pi.jpg" alt="enter image description here"></a></p>

<p>I have some videos that I would like to do, but I do not know where to do it on YouTube.</p>

<p>Does anyone know the name of this and how can I add it?</p>
 11523: <p>It is in:
Creator studio => Video Manager => (Select Video) => Card (or "End screen &amp; Annotations")</p>

<p>There you select time and click on "Add element" button. Now you can choose, what you want to add.
<a href="https://i.stack.imgur.com/XLNu6.png" rel="nofollow noreferrer"><img src="https://i.stack.imgur.com/XLNu6.png" alt="enter image description here"></a></p>
