How do you display hint circles in Android? -

I'm wondering how to display the "Hint Circle" (I do not know where they really are, and the first I did not find it anywhere while opening the bar app) I have seen it in many stock Android apps, but not many third party apps. Is there a way to do this?

Thank you!

Here's a picture of what I mean. (Blue circle with ok, not white)

There is a library for it,