I learned how to use the screen zoom feature in Screencast-O-Matic. It was not as easy as other features. I had trouble setting the marker that you need to set for a change in zoom. But, fortunately Ctrl-z works for the software.
I think I will get better at this and soon be able to get it in one try. Anyway- here is an example of what you can do with this.
Now I just need to find the pandemic haircut correction feature.