phpengine/ui/admin/users.tpl

<div class="accordion" id="userlist">
	<div class="card">
		<div class="card-header">
			<h5 class="m-0">
				<a class="text-dark" data-toggle="collapse" data-target="#user1" aria-controls="collapseOne">
					Utente 1
				</a>
			</h5>
		</div>

		<div id="user1" class="collapse" data-target="#userlist">
			<div class="card-body">
				<form class="form">
					<div class="form-group">
						<input type="text" class="form-control" placeholder="username"/>
						<input type="text" class="form-control" placeholder="password"/>
						<input type="text" class="form-control" placeholder="roles"/>
					</div>
				</form>
			</div>
		</div>
	</div>
</div>