I am adding it under the admin_menu action directly in my function.php file.
add_action( ‘admin_menu’, ‘chbg_admin_menu’ );
function chbg_admin_menu() {
add_menu_page( ‘CHBG’, ‘CHBG’, ‘manage_options’, ‘chbg-admin’, ”, $icon, 40 );
acf_add_options_sub_page(array(
‘page_title’ => ‘Email Settings’,
‘menu_title’ => ‘Email Settings’,
‘parent_slug’ => ‘chbg-admin’,
));
}