How to Screen Share on Powerpoint Presenter View 

1. To screen share in Powerpoint presenter's mode, you must first have more than one display, and in extended display. 
2. To extend your displays
   1. Press the "Windows Key" and "P" on the keyboard you to Extended displays.
   2. On the right of the screen you will be prompted with options to switch your displays. You may use your mouse to select the display you want. 
3. Then go to your Powerpoint and click "Slideshow" on top of the Powerpoint and select "Use Presenter View"
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4. Then start your PowerPoint presentation.
5. You should now see your presentation in Presenter mode.
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6. Then press "Alt" and "Tab" on the keyboard and select Zoom.
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7. You may then begin your screen sharing.
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8. Now select "Screen 2".
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9. You are now presenting in Presenter mode, while screen sharing your presentation (your notes will not be displayed).

For additional guide on Zoom, visit this link: Zoom Help Guide