你可以用两种方法来做这件事。

将新节添加到现有节nav_menus panel 然后将控件添加到部分：

---

$wp_customize->add_section(\'my_section\', array(
    \'title\'    => \'My options\',
    \'panel\' => \'nav_menus\'
));
$wp_customize->add_setting(\'my_setting\', array(
    \'type\'              => \'theme_mod\',
    \'settings\'          => \'my_section\',
    \'capability\'        => \'edit_theme_options\',
    \'sanitize_callback\' => \'sanitize_my_setting\'
));
$wp_customize->add_control(\'my_control\', array(
    \'label\'   => \'My option\',
    \'section\' => \'my_section\',
    \'type\'    => \'text\'
));

2。向现有控件添加新控件menu_locations section:

<小时>

wp_customize->add_setting(\'my_setting\', array(
    \'settings\'          => \'menu_locations\',
    \'capability\'        => \'edit_theme_options\',
    \'sanitize_callback\' => \'sanitize_my_setting\'
));

$wp_customize->add_control(\'my_control\', array(
    \'label\'   => \'My Option\',
    \'section\' => \'menu_locations\',
    \'type\'    => \'text\'
));

如果我是你，我会选择第一个解决方案，因为它使定制程序更干净，但这取决于你的需要。我希望这会有帮助