In this article we demonstrate how you can use Ninja Popup plugin integration to have popup window on button clicks
1 – First please install and activate “Ninja Popup Plugin” from admin panel >> appearance >> install plugins
2 – Now create a popup as you desire
3 – Now that you have your popup ready to use, edit the page you like in edit content mode
4 – Insert a button shortcode and open its setting panel
5 – Now activate “Ninja Popup” option as shown in following image
6 – Now select which popup you want to show in that button click event
Save the setting and check that page again , please know that popup will not appear or work in edit content mode.