How to add agents to a queue in Visual Studio Team Services (was VS Online)?
<p>I'm trying out Team Services and I see that I can add queues but I can't add any agents to them. In fat, I had two starting queues: Default and Hosted and only the latter had an agent in it.</p>

<ol>
<li>Are agents necessary for enabling automatic builds or am I a victim of misconception?</li>
<li>How do I do more agents to the queues?</li>
</ol>