To add a call button on a WordPress site, follow these steps:
1. Install and activate the WP Call Button plugin from the WordPress plugin repository.
1. After activating the plugin, go to Settings > WP Call Button and configure the button options such as button text, button placement, call button icon, etc.
1. Save the changes and check the front end of your website to see the call button.
1. If you want to add the call button in a specific location on your website, you can use a shortcode [wp_call_button] or add the following PHP code to your website template file:
1. Test the call button to make sure it works properly.