Sharing a Screen in Zoom

How do I share my screen in Zoom?

Zoom allows you to share a screen in a number of ways. Please see Zoom’s Screen Sharing Features documentation for additional information.

Using Zoom Companion Mode

Instead of using physical cables or risking loud, disruptive audio feedback loops, you can use Zoom’s native Companion Mode to wirelessly share your iPad or mobile device screen in a classroom or meeting.

Companion Mode is explicitly designed for dual-device setups. When you join an active meeting from a secondary device, Zoom automatically suppresses that device’s microphone, camera, and speakers. This completely prevents acoustic screeching while perfectly optimizing the tablet for screen sharing and digital whiteboarding.

How to use Companion Mode:

  1. Start the meeting on your primary classroom computer or laptop first.

  2. Open the Zoom app on your iPad or tablet (ensure you are signed in with your Lafayette SSO account).

  3. Tap Join and enter the Meeting ID, or click your calendar meeting link.

  4. When prompted by Zoom, select Join as a Companion Device (or choose to join without audio).

  5. Once in the meeting, tap the green Share icon on your iPad to instantly broadcast your digital whiteboard, slides, or apps to the class.

Because Zoom natively manages companion devices, you can remain logged into your Lafayette Zoom account on both your laptop and tablet simultaneously without causing configuration issues or disconnecting your session.

Additional Screen Sharing Instructions

I want to share the computer screen

To share the entire screen or a specific application:

  1. Click the Share button in the toolbar located at the bottom of Zoom.
  2. Select to the screen you want to share (e.g., Desktop, an opened application) and click the Share button..
  3. Click the Stop Share button to stop sharing.

To share a portion of the screen:

  1. Click the Share Screen button in the toolbar located at the bottom of Zoom.
  2. Click the Advanced tab at the top of the share screen.
  3. Select Portion of Screen and click the Share button.
  4. Resize the box to fit to the portion of the screen you want to share.
  5. Click the Stop Share button to stop sharing.

I want to share the document camera in a smart classroom

  1. Click the Share button in the toolbar located at the bottom of Zoom.
  2. Click the Advanced tab at the top of the share screen.
  3. Select Content from 2nd Camera and click the Share button.
  4. Click the Stop Share button to stop sharing.

I want to share the screen of an iPad physically connected to a Mac

This feature is only available when using Zoom on a Mac.

  1. Connect the iPad to the Mac using a USB-C or Lightning cable (depending on your iPad model).
  2. Click the Share button in the toolbar located at the bottom of Zoom.
  3. Select iPhone/iPad via Cable and click the Share button.
  4. Click the Stop Share button to stop sharing.

If you’re unable to share your iPad when connected to your Mac:

Your iPad needs to be “trusted” by your Mac and sometimes that process needs to be forced.

  1. On your Mac, open Quicktime Player.
  2. In Quicktime Player, go to File then New Movie Recording.
  3. Connect the iPad to your Mac with the USB to Lightning cable.
  4. The Trust Menu should appear on the iPad. Press Trust.
  5. Unplug the iPad from your Mac and then reconnect.
  6. Return to Zoom and select the iPhone/iPad via Cable option to share the iPad.

I want to wirelessly share the screen of an iPad

To wirelessly share the screen of an iPad using AirPlay:

This feature is unavailable when used on campus, but generally available on personal wireless networks.

  1. Click the Share button in the toolbar located at the bottom of Zoom.
  2. Select iPhone/iPad via Airplay and click the Share button. You may be prompted to install a plugin, which is expected.
  3. Follow the on-screen instructions.
  4. Click the Stop Share button to stop sharing.

To wirelessly share the screen of an iPad on campus:

  1. Ensure your iPad is configured to share its screen.
  2. Be sure your Zoom meeting doesn’t require a participant be logged into their Zoom account to join by ensuring “Require authentication to join” is unchecked in your meeting settings from zoom.lafayette.edu.
  3. Start the Zoom meeting from the computer.
  4. Join the Zoom meeting with the iPad.
    • Don’t join audio (or mute the microphone and speaker) to avoid audio feedback.
  5. In the Zoom app on the iPad, click Share at the bottom and select Screen.
  6. Click Start Broadcast. This does not mean Zoom is recording the session.
  7. Return to the Zoom app and click Stop Share.
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