Allowing or preventing your meeting participants from screen sharing

1. Sign in to the Zoom desktop app.
2. Start or join a meeting as the host. 
3. In the meeting controls toolbar, next to the Share icon , click the up arrow icon .
4. Click Host tools for share.
   The Share side panel will open.
5. Adjust the following settings as needed:
   • How many participants can share at a time?
     • One participant can share at a time: Only allow one participant to share at a time. Others must stop their share before someone else can begin sharing. 
     • Multiple participants can share simultaneously: Allow multiple participants to share their screen simultaneously. By default, participants will be able to view only one screen shared, but can switch between which shared screen tab they are currently viewing. Users with dual monitor mode enabled will be able to see 2 screens at once. When you enable this setting, the other screen sharing settings are unavailable.
       Note: Enabling the Multiple participants can share simultaneously option disables the Share sound feature in webinars and the Optimize for video sharing feature in both meetings and webinars.
   • Who can share?
     • Host only: Allows only the host and any co-hosts to share their screen. 
     • All participants: Allows all participants in the meeting to share their screen in this session.
   • Who can start sharing when someone else is sharing? 
     
     • Host only: Allows only the host and any co-hosts to interrupt someone's screen sharing and begin sharing their screen. 
     • All participants: Allows all participants in the meeting to interrupt someone's screen sharing and begin sharing their screen.

Notes:

• Changing these settings during a meeting only affects this current session. Restarting the meeting or starting a different meeting will revert the screen sharing options back to their default. To change the default for meetings you host, adjust the screen sharing settings on the Settings page in the Zoom web portal.
• If the options are grayed out, ensure that Multiple participants can share simultaneously is not selected, as other options cannot be adjusted while it is enabled.

1. Start a meeting on the Zoom Web App.
2. In the meeting controls toolbar, next to the Share icon , click the up arrow icon .
3. Click Advanced Sharing Options.
   A pop-up window will appear.
4. Adjust the following settings as needed: 
   • How many participants can share at the same time?: Choose how many meeting participants can share at once during the meeting. 
     
     • One participant can share at a time: Only allow one participant to share at a time. Others must stop their share before someone else can begin sharing. 
     • Multiple participants can share simultaneously: Allow multiple participants to share their screen simultaneously. By default, participants will be able to view only one screen shared, but can switch between which shared screen they are currently viewing. Users with dual monitor mode enabled will be able to see 2 screens at once. When you enable this setting, the other screen sharing settings are unavailable.
   • Who can share?
     • Host Only: Allows only the host and any co-hosts to share their screen. 
     • All Participants: Allows all participants in the meeting to share their screen in this session.
   • Who can start sharing when someone else is sharing? 
     
     • Host Only: Allows only the host and any co-hosts to interrupt someone's screen sharing and begin sharing their screen. 
     • All Participants: Allows all participants in the meeting to interrupt someone's screen sharing and begin sharing their screen.

Note: Changing this setting during a meeting only affects this current session. Restarting the meeting or starting a different meeting will revert the screen sharing options back to their default. To change the default for meetings you host, adjust the screen sharing settings on the Settings in the Zoom web portal.

1. Sign in to the Zoom mobile app.
2. Start a meeting as the host.
3. In the meeting controls toolbar, tap the More icon .
4. Tap Host tools .
5. Tap Participants.
6. Tap the Share screen toggle to enable or disable it.
7. Swipe down on the Participants setting menu close it and return to the full meeting view.