Show Zoom controls during screen share

I need to demonstrate the use of the Zoom icons during meetings.  I have used the instructions at (from https://support.zoom.us/hc/en-us/articles/201362153-Sharing-your-screen-or-desktop-on-Zoom) and https://support.zoom.com/hc/en/article?id=zm_kb&sysparm_article=KB0059848  but it doesn't work. I have tried this repeatedly with my account and a colleague tried with their account. Does not work.  Do I need to launch meeting from the web instead of from the app? Thanks.