hello i was thinking that this would do the job but it does not respond

<?php

add_action(‘admin_menu’, ‘add_admin_menu_links’);

function add_admin_menu_links(){
if ( !is_admin() ) {
add_menu_page(‘booked-appointments’);
}
}

but without result .i just need the non admin users to be able to see the appointment plugin menu.that’s all!

could i make another code setting or do you think that i must defenitelly buy the pro version?

thank you