nextcloud/settings/templates/users/main.php

<?php
/**
 * Copyright (c) 2011, Robin Appelman <icewind1991@gmail.com>
 * This file is licensed under the Affero General Public License version 3 or later.
 * See the COPYING-README file.
 */
$userlistParams = array();
$allGroups=array();
foreach($_["groups"] as $group) {
	$allGroups[] = $group['name'];
}
$userlistParams['subadmingroups'] = $allGroups;
$userlistParams['allGroups'] = json_encode($allGroups);
$items = array_flip($userlistParams['subadmingroups']);
unset($items['admin']);
$userlistParams['subadmingroups'] = array_flip($items);
?>

<div id="app-navigation">
	<?php print_unescaped($this->inc('users/part.grouplist')); ?>
	<div id="app-settings">
		<?php print_unescaped($this->inc('users/part.setquota')); ?>
	</div>
</div>

<div id="app-content">
	<?php print_unescaped($this->inc('users/part.createuser')); ?>
	<?php print_unescaped($this->inc('users/part.userlist', $userlistParams)); ?>
</div>