Circles

Was hoping someone can help me.  When doing a tutorial presentation, and you want to point out a button or a place they are suppose to click on a screen, some authors make it appear as they are drawing a circle around that object as they are talking. Where is that function? I remember like three versions back it was an asset in the drop downs, I cannot find it anymore  

Drawing circles on presentations

Okay so stupid question, but it is something I have done before a few years back.  Drawing circles over a video presentation, that looks like I am drawing as I am talking  For example, “I want you to select this button”…and the circle looks as if I draw it as I say it How do you do that???   KB