How to show navigation bar options to specific users in moodle lms?

Below is my code for showing an extra option in navigation-drawer of Moodle LMS account.

function local_report_extend_navigation(global_navigation $navigation)

{

$main_node = $navigation->add(get_string('pluginname', 'local_report'), '/local/report/');
$main_node->nodetype = 1;
$main_node->collapse = false;
$main_node->force_open = true;
$main_node->isexpandable = false;
$main_node->showinflatnavigation = true; 
// $main_node->icon = new pix_icon('i/settings', get_string('pluginname', 'local_report'));
$main_node->icon = new pix_icon('i/files', get_string('pluginname', 'local_report'));

} The output for it is : This is the navigation-drawer. I want to show the Reports option to only admin, teacher and manager

Can anyone let me know how to make this done?

You will need to create a capability in your local plugin. In local/report/db/access.php

$capabilities = array(
    'local/report:canview' => array(
        'captype' => 'read',
        'contextlevel' => CONTEXT_SYSTEM,
        'archetypes' => array(
            'manager' => CAP_ALLOW,
            'teacher' => CAP_ALLOW,
            'editingteacher' => CAP_ALLOW,
        ),
    ),
);

Then use something like this in your function.

if (!has_capability('local/report:canview', \context_system::instance())) {
    return;
}