Link

Hi hernanjo,

Thank you for your interest in wpdatatables.

How to create those links you can find here https://www.gaintap.com/archives/clickable-website-phone-number-and-call-tracking-guide/

In simple table then you can add this HTML to make a clickable phone number.
<a class="btn btn-info" href="tel:5554280940">Call us at 555-428-0940</a>

Those classes are from bootstrap framework you can use one of those https://getbootstrap.com/docs/3.3/css/#buttons-options or you will create custom class and set custom CSS rule in Custom CSS filed on Custom JS and CSS tab in plugin settings.

Best regards.