To screen-share during an event from a Mac you need to allow screen-sharing in Chrome (or another browser) from your system settings. Follow these steps to complete the process.
How to allow screen sharing in Chrome (or other browsers) on Mac:
1. Go to ‘System Preferences' and select 'Security and Privacy'.
2. Click on the lock in the bottom left corner to make changes (you may be asked for your Mac password if you use one - enter that here)
3. Scroll down in the list to the right and find Chrome (or whatever browser you might be using)
4. Enable your browser by clicking on it so it gets a checkmark, and click the lock again to save the changes.
Settings are now ready for screen sharing on your Mac.
Read more about screen sharing with audio.
Please write to email@example.com if you have any questions.