You are going to present to the Lexington Computer and Technology Group. Great! Thanks! Here is some information that will help make your presentation a better one.
The default mouse cursor size might be the right one for your everyday use, but it would help your presentation if it was a little larger. Here's how to do that.
digested from https://macreports.com/how-to-change-macos-cursor-size/
You can repeat this process when you want to reset the size.
This from https://www.howtogeek.com/427263/