settings.php

<?php
// This file is part of Moodle - http://moodle.org/
//
// Moodle is free software: you can redistribute it and/or modify
// it under the terms of the GNU General Public License as published by
// the Free Software Foundation, either version 3 of the License, or
// (at your option) any later version.
//
// Moodle is distributed in the hope that it will be useful,
// but WITHOUT ANY WARRANTY; without even the implied warranty of
// MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
// GNU General Public License for more details.
//
// You should have received a copy of the GNU General Public License
// along with Moodle.  If not, see <http://www.gnu.org/licenses/>.

/**
 * Plugin administration pages are defined here.
 *
 * @package     tool_blocksmanager
 * @category    admin
 * @copyright   2019 Catalyst IT
 * @license     http://www.gnu.org/copyleft/gpl.html GNU GPL v3 or later
 */

defined('MOODLE_INTERNAL') || die();

if ($hassiteconfig) {
    $settings = new admin_category('tool_blocksmanager_settings', get_string('pluginname', 'tool_blocksmanager'));
    $ADMIN->add('tools', $settings);

    $ADMIN->add(
        'tool_blocksmanager_settings',
        new admin_externalpage(
            'tool_blocksmanager/block',
            get_string('manageblocklocking', 'tool_blocksmanager'),
            new \moodle_url('/admin/tool/blocksmanager/block.php')
        )
    );

    $ADMIN->add(
        'tool_blocksmanager_settings',
        new admin_externalpage(
            'tool_blocksmanager/region',
            get_string('manageregionlocking', 'tool_blocksmanager'),
            new \moodle_url('/admin/tool/blocksmanager/region.php')
        )
    );

    $ADMIN->add(
        'tool_blocksmanager_settings',
        new admin_externalpage(
            'tool_blocksmanager/setup',
            get_string('setuptitle', 'tool_blocksmanager'),
            new \moodle_url('/admin/tool/blocksmanager/index.php')
        )
    );
}