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Since the latest update changed to allow only host to share you can change
that setting globally.
login to zoom>settings>in meeting (basic)>who can share>all participants
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Allow Share Screen in Zoom to anyone:
watch this vedio:
https://youtu.be/5VKUoJIyVyA
or:
1. open zoom
2. Click your profile image on the top right corner
3. Click on your name
4. Click on My Profile
5. find settings on the left list
6. find the "Screen sharing" option, enable it
7. "the Who can share" choose all
8. "Who can start sharing when someone else is sharing" choose all
Done