Hi,
I am Ganesh Gandhi, an Independent Advisor and Office Insider for Android. I am here to work with you on this problem.
As you need to show Tray on Main Monitor:
Kindly follow these steps.
Right click on any taskbar, then uncheck Lock all taskbars.
Move the main taskbar (the one with the system tray on it) to a screen of your choosing. You can do this by dragging the whole taskbar.
(optional) Right click on any taskbar and check Lock all taskbars again.
Also refer here to move system tray:
https://win10faq.com/move-system-tray-different...
To show or hide Taskbar using multiple monitors in Windows 10, refer:
https://www.youtube.com/watch?v=oGqYsYlKcNE
Do let me know if you require any further help on this. I will keep working with you until it's resolved.
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