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What is ZOOM?

Zoom is a web conferencing tool that unifies cloud video conferencing, online meetings, and collaboration in an easy to use platform. Click to watch the video.
Zoom's extensive features, compatibility with desktop and mobile devices and H.323 room system, allows participants to have a rich web conferencing experiences with both NUS and external users.


  • Easy to launch and join with up to 300 participants
  • HD video, high quality audio using VOIP
  • Screen sharing and collaboration features
  • Co-annotation and whiteboard
  • Video breakout rooms
  • MP4 recording

Current Update

Due to the current situation, there is an increase of online conferencing usage. Take note of the following:

  • Please use Zoom's Online Test Site [] for all testing purposes.
    It allows you to start a session, invite participants, test your audio, webcam and share your screen. Only Breakout Room and Recording function is not available.
  • Keep to the slot as scheduled in LumiNUS. Only start, launch and join the session 10 minutes before start time; and end the session promptly. Do not join at any other times.
  • If you do get a message "Host Has another Session", try again in 5 minutes. If you still get the message, schedule another new session.
  • You can also sign up for your NUS Zoom Education License account on NUS's Zoom Portal.

Using Zoom with LumiNUS 

  1. Zoom is integrated in LumiNUS. It is based on the Zoom PRO license: 300 participants per session.
  2. To schedule a session. Login to LumiNUS, go to your module > Tools > Conferencing and click Create Session.
  3. Provide the session title, date, time, duration and access. Select "Send Emails" if you want students to be notified. Click Create.


  4. Ten minutes before the session starts, click on the session title. The browser will prompt you to launch your Zoom app. It will prompt you to download if you have not.
  5. Take control of the session, be the Host. Click on Participants Button > Claim Host. Type in the session's 6 digit Host Key displayed in LumiNUS.
  6. You are now ready to conduct the online discussion with your students.

  7. To record the session, click on the Record button. Zoom will record the screen, video and audio. If you do not see the Record button, please Claim Host first.
    The MP4 will be in your PC's My Documents/Zoom/SessionName folder a few minutes after the meeting ends. You can then upload the MP4 file to your module's Multimedia folder in LumiNUS.
    Text chat will have to be manually saved from within the chat window itself.


Download Zoom for:  Win  |  Mac  |  Linux  |  iPhone  |  Android.
Once installed, join the Test Meeting and test your audio.

Video Guides

Scheduling and Joining

Audio, Video & Sharing


Additional user guides can be found on the Zoom support site.


 My participants can't hear from the YouTube video playing on the browser that I'm sharing...

To share a video player or YouTube which has audio, you will need to select "Share computer sound" and "Optimize for full-screen video clip" when you share screen.

 My Zoom Control buttons disappear. Where are they?

Hover your cursor to the top or bottom of the screen depending on which mode you are in. Normally, they are the bottom of the screen. In presentation mode they are at the top.
Also: How Do I Change The Video Layout 

 My first time as a Zoom Participant

A Day Before

20 Minutes Before

  • Find a quiet space with a stable WiFi connection.
  • Join Zoom following the instructions the organizer has provided:
    • If the conference is in LumiNUS, go to your module, then the Conferencing page. Click the link to join, or
    • It could be a link sent via email.
  • Test your headset and webcam.
  • Close unnecessary windows or apps.

During the Zoom Meeting

  • Click Start Video to begin sending your webcam. 
  • Click the Chat bubble to ask questions via text or as informal discussion. You can chat to everyone or a specific person. Some instructors may want a certain format like no text chat until it comes to Q&A segment, or they will not be tracking the text chat window.
  • Find out who else is in the meeting by clicking Participants. This is also where you can "raise your hand" to ask a question, answer a question, or start an intense philosophical debate. What you do with this power is up to you.
  • Always be prepared to share your screen.
  • At the end of the class, click Leave Meeting.

Views of Zoom window. Toggles between:

  • Speaker View: To focus on the speaker.
  • Gallery View: To show all participants (up to 25 people). 
  • Full Screen: To maximize screen. 

Zoom Menu

The Zoom menu is at the the bottom of the Zoom window. Hover your cursor over it if it is hidden. In screen sharing mode, it goes to the top of the screen.

  • Mute: Switch to turn on/off your microphone.
  • Start/Stop Video: Sending your webcam.
  • Invite: To invite others.
  • Share Screen: Allows you to share your desktop screen and specific windows.
  • Chat: To send messages to everyone or a specific person.
  • Record: If the host allows it. Not provided as a default. Records as a MP4 on your computer (Documents/Zoom/SessionName).
  • Leave Meeting: Click this at the end of the meeting. Do not leave the Zoom meeting open.
  • More: Allows you to raise your hand, and other participants quick response button.


  • Provide a clear video. Keep your face lit, and the background neat and tidy. A clean wall will be the best. If the window is behind, pull the blinds or curtains.
  • Microphones pick up all ambient noise, so keep your mic muted unless you are speaking.
  • Focus. Avoid other activities such as eating and drinking.

 My class is huge. Can the bandwidth handle it?

The bandwidth used by Zoom will be optimized for the best experience based on the participants’ network. A good stable connection is still required. The bandwidth will automatically adjust for 3G, WiFi or Wired environments.

Recommended bandwidth for meetings panelists:

  • For 1:1 video calling:
    • 600kbps (up/down) for high quality video
    • 1.2 Mbps (up/down) for 720p HD video
    • Receiving 1080p HD video requires 1.8 Mbps (up/down)
    • Sending 1080p HD video requires 1.8 Mbps (up/down)
  • For group video calling:
    • 800kbps/1.0Mbps (up/down) for high quality video
    • For gallery view and/or 720p HD video: 1.5Mbps/1.5Mbps (up/down)
    • Receiving 1080p HD video requires 2.5mbps (up/down)
    • Sending 1080p HD video requires 3.0 Mbps (up/down)
  • For screen sharing only (no video thumbnail): 50-75kbps
  • For screen sharing with  video thumbnail: 50-150kbps
  • For audio VoiP: 60-80kbps

 Can each of the breakout rooms be recorded?

By default, only the main room is being recorded, regardless of which breakout room the host has joined. In order to record the breakout rooms, there are two options:

  1. Make one student from each room the "Co-host" before starting (opening) the breakout rooms.
  2. Give the permission to a representative to record within each room after the breakout session has started.
 How do I prevent participants from unmuting themselves?

Click the More button in Participants panel. 

  • Check "Mute Participants on Entry"
  • Uncheck "Allow Participants to unmute themselves."

 How do I prevent participants from sharing their screens...

In the host controls, click on the arrow next to Share Screen and click Advance Sharing Options.
Under Who can share? Select Only Host.

 My students are not displaying their real names. I see only IDs and nicknames...

Encourage participants to rename their display name. Hover on their name in Participants panel and click the Rename button to re-type their display name. As the host, you can also rename them.

 It's 10am sharp, and I want to prevent latecomers from joining in. Can I close the doors?

Yes. You can lock the meeting to prevent new participants from joining. In the host controls, click on Participants panel and click on the ellipses. Select Lock Meeting. Take note that if a student were to leave the session because of a technical issue like a PC restart; the student will not be able to rejoin the session.

 Remove a Participant from the Session

If you have begun a session and find an unwanted participant has joined, click Manage Participants at the bottom of the Zoom window. Next to the person you want to remove, click More > Remove.

 Instead of VOIP, can I use the telephone?

VOIP calls are highly recommended as our license does not offer toll-free calls.
The option to join via teleconferencing/audio conferencing (using a traditional phone) is provided in case:

  • you do not have a microphone or speaker on your PC/Mac,
  • you do not have a smartphone (iOS or Android) while on the road, or
  • you cannot connect to a network for video and VoIP (computer audio)

Zoom has call-in numbers available for many countries. Full list here:

 I'm not able to see some participants while trying to assign the breakout rooms.

You can split your participants into 50 breakout rooms. You can switch to split them automatic or manual. To start a breakout room as the host, you will need to use the Zoom desktop client.

Participants who joined the Zoom meeting from the Zoom Desktop Client or Zoom Mobile App, can participate in breakout rooms.

Participants who joined via the web client are unable to join Breakout Rooms, but the main room can be used as an alternative session for these users.

 We have a Polycom Trio speakerphone in our conference room. Can we use it with Zoom?

Use a Micro USB cable to connect the Polycom Trio with the laptop. You will need to select the Polycom's Speaker and Microphone device in Zoom. Run the Test Speaker and Microphone to properly configure it.

 Is my Zoom Account Basic(free) or Licensed (NUS)?

 You can check My Profile on the Zoom Portal.

You can also check your profile on the Zoom Client.

Alternative Platform

You can also use:

  1. Microsoft Teams for chat, file sharing and video meet (up to 250 participants).
  2. Skype for Business for meeting, sharing and instant messaging.
    (Note: All NUS Staff and Students have access to Office 365, Teams and Skype for Business with their NUSNET ID).