Bottom right information boxes?

In many games, I've seen small boxes pop up in the bottom right corner. They're just like the ones that show when you earn points, but they are customized. If you need a more specific example, they appear in Jailbreak when you start a robbery. Anyways, does anyone know how these are made? If they're custom, I'm fine with making my own display, but I want to know if something like this was built in and can save me time. I've searched the internet and found nothing, so if you know anything please leave a response. Thank you.