Hi, @limmyjuong,
The main menu bar for Zoom is always on the bottom. What you see when screen sharing is what I call "a floating green and red menu bar" that you can move around by grabbing the green part. It's not attached to anything... so you can move it anywhere.
You might consider putting in a Feature Request to allow the user to "float" the regular Zoom menu bar similar to the floating Screen-Share menu bar:
Feature Request entry: https://www.zoom.us/feed
One more thing! While the menu bar is displayed in a normal view, you can press an Alt key (all by itself) and it will keep the menu bar visible... but also make the entire video visible by shrinking it slightly. I facilitate a lot of Zoom sessions, and that's the way I often set it up after starting the session.
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