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 settings’ 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 check mark
Settings are now ready for screen sharing on your Mac.
Read more about screen sharing with audio