Creation custom widget for WPBakery. Code example

! Enable support for custom post types in the admin panel in the tab WPBakery Page Builder.

Documentation and list of available fields – https://kb.wpbakery.com/docs/inner-api/vc_map/

<?php

class myVCshortcode {

    function __construct(){
        add_action('init', array($this, 'create_shortcode'), 1000);
        add_shortcode('vcshortcode1', array($this, 'render_shortcode'));
    }

    public function create_shortcode() {
        
        if(!defined('WPB_VC_VISION')) {
           return; 
        }
       
        if(function_exist('vc_map')) {
        vc_map(array(
            'name' => 'Shortcode1',
            'base' => 'vcshortcode1',
            'description' => '',
            'category' => 'MyCategory',
            'params' => array(
                array(
                    'type' => 'textfield',
                    'heading' => 'Text',
                    'param_name' => 'text',
                    'value' => '',
                    'description' => 'Insert Text',
                ),
                array(
                    'type' => 'textarea_html',
                    'heading' => 'Description',
                    'param_name' => 'content',
                    'value' => '',
                    'description' => 'Insert Text',
                ),
                array(
                    'type' => 'textarea_html',
                    'heading' => 'Description',
                    'param_name' => 'content',
                    'value' => '',
                    'description' => 'Insert Description',
                )
            )
        ));
     }

    }

    public function render_shortcode($atts, $content, $tag) {
        //Front part shortcode
        $atts = (shortcode_atts(array(
            'text' => '',
        ),
        $atts));

        $title = $atts['text'];
        $content = wpb_js_remove_wpautop($content, true);

        $result = '';
        $result .= '<h2>' . $title . '</h2>';
        $result .= '<div class="content_box">' . $content . '</div>';

        return $result;

    }
}

new myVCshortcode();