Find it under Settings | Results | Results Interaction
When the Use Dial Link for Phone Setting is checked it will make the phone number in your locations results clickable to auto dial by adding a tel: based hyperlink.
The dial-ready hyperlink will be used wherever the [slp_location] shortcode is used. This includes the results under the map, directory landing pages, and in Store Pages if the [slp_location] shortcode is used instead of the [storepage field=”phone”] shortcode.
Use along with the Phone Extension Delimiter setting to handle pauses for extensions.
Formerly labelled: Make a Dial Link Phone number (clickable)