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// Register settings page. In this case, it's a theme options page
add_filter( 'mb_settings_pages', 'prefix_options_page' );
function prefix_options_page( $settings_pages ) {
    $settings_pages[] = array(
        'id'          => 'client',
        'option_name' => 'client',
        'menu_title'  => 'Client Details',
        'icon_url'    => 'dashicons-edit',
        'style'       => 'no-boxes',
        'columns'     => 1,
        'parent'      => 'options-general.php',
        'tabs'        => array(
            'general' => 'General Settings',
            'social'  => 'Social Media',
            'my_settings'     => 'Settings',
        ),
        'position'    => 68,
    );
    return $settings_pages;
}

add_filter( 'rwmb_meta_boxes', 'your_prefix_register_meta_boxes' );
function your_prefix_register_meta_boxes( $meta_boxes ) {
    $meta_boxes[] = array (
        'title' => 'Client details',
        'id' => 'client_fields',
        'settings_pages' => 'client',
        'context'        => 'normal',
        'priority'       => 'high',
        'tab'            => 'general',
        'fields' => array(
            array (
                'id' => 'client_name',
                'type' => 'text',
                'name' => 'Client/Company Name',
            ),
            array (
                'id' => 'client_address',
                'type' => 'text',
                'name' => 'Client Address',
            ),
            array (
                'id' => 'client_address_2',
                'type' => 'text',
                'name' => 'Client Address 2',
            ),
            array (
                'id' => 'client_city',
                'type' => 'text',
                'name' => 'Client City',
            ),
            array (
                'id' => 'client_state',
                'type' => 'text',
                'name' => 'Client State',
            ),
            array (
                'id' => 'client_zip',
                'type' => 'text',
                'name' => 'Client Zip',
            ),
            array (
                'id' => 'client_phone',
                'type' => 'text',
                'name' => 'Client Phone',
            ),
            array (
                'id' => 'client_email',
                'type' => 'text',
                'name' => 'Client Email',
            ),
            
        ),
        
    );
    $meta_boxes[] = array (
        'title' => 'Client Social',
        'id' => 'client_social',
        'settings_pages' => 'client',
        'context'        => 'normal',
        'priority'       => 'high',
        'tab'            => 'social',
        'fields' => array(
            array (
                'id' => 'Facebook',
                'type' => 'url',
                'name' => 'Facebook URL',
            ),
            array (
                'id' => 'instagram',
                'type' => 'url',
                'name' => 'Instagram URL',
            ),
            array (
                'id' => 'twitter',
                'type' => 'url',
                'name' => 'Twitter URL',
            ),
            array (
                'id' => 'Google Business',
                'type' => 'url',
                'name' => 'Google Business',
            ),
            array (
                'id' => 'yelp',
                'type' => 'url',
                'name' => 'Yelp URL',
            ),
        ),
    );
    $meta_boxes[] = array (
        'title' => 'Client Settings',
        'id' => 'my_settings',
        'settings_pages' => 'client',
        'context'        => 'normal',
        'priority'       => 'high',
        'tab'            => 'my_settings',
        'fields' => array (
                'id' => 'my_services',
                'type' => 'switch',
                'name' => 'Services',
                'desc' => 'turn on services CTP',
                'std' => 1,
                'style' => 'rounded',
            ),
            array (
                'id' => 'my_testimonials',
                'type' => 'switch',
                'name' => 'Testimonials',
                'desc' => 'turn on Testimonials CTP',
                'std' => 1,
                'style' => 'rounded',
            ),
            array (
                'id' => 'my_team_members',
                'type' => 'switch',
                'name' => 'Team Members',
                'desc' => 'turn on Team Members CTP',
                'std' => 1,
                'style' => 'rounded',
            ),
            array (
                'id' => 'my_faq',
                'type' => 'switch',
                'name' => 'FAQ',
                'desc' => 'turn on FAQ CTP',
                'std' => 1,
                'style' => 'rounded',
            ),
        );
    return $meta_boxes;
}