[quote=@Legend Begins]
<Snipped quote by Spiritblitz>

Where did those people come from?
[/quote]

So she set up these flyers from her dimension that was able to move people from their world to the HQ. they know that inter-dimensional travel would be a problem for some, but have created an exercise that would help ween them into it. If they wanted. Most of those who accepted  the flyers were people who asked for help anyways.