Increase Mega Menu Column

Install and activate the child theme.
Go to Dashboard > Appearance > Theme Editor and open functions.php file. Or you can edit it via FTP in wp-content/themes/bizix-child-theme directory.

Add the code in the functions.php file:

function custom_mega_menu_columns_number() {

    return array(

        1 => '1',

        2 => '2',

        3 => '3',

        4 => '4',

        5 => '5',

        6 => '6',

        7 => '7',

        8 => '8'

    );

}

add_filter('swm_mega_menu_columns_number','custom_mega_menu_columns_number');