From top bar click on settings and Choose Pro settings-
2. Copy and paste below code in your website
<script src="https://cdn.jsdelivr.net/npm/jquery@3.4.1/dist/jquery.min.js"></script>​<link rel="stylesheet" href="https://cdn.jsdelivr.net/gh/fancyapps/fancybox@3.5.7/dist/jquery.fancybox.min.css" /><script src="https://cdn.jsdelivr.net/gh/fancyapps/fancybox@3.5.7/dist/jquery.fancybox.min.js"></script>​
Click on Save button
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Now copy the below code, and make sure to replace youtube link with your video link.
<a data-fancybox href="https://www.youtube.com/watch?v=_sI_Ps7JSEk" class="youtubebtn">Play Video</a>
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Remove the code from previously added widget and paste the above code and click on save button
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