Note: For all teachers, please:
- •Upgrade your Lark app to the latest version (V3.18.3 or above for esktop app) in advance.
- •Make sure your device is properly connected to the internet. Desktop app preferred for course offering purposes.
- •Test your camera before starting a course to make sure that both the camera and the microphone function properly.
I. Start an online course
1. Download Lark and get logged in
Go to and choose your desired version of Lark to be installed.
Once the installation is completed, launch Lark and enter your email address or phone number to log in.
Note: Administrators shall complete the initialization setup in Lark admin interface and enter the information of faculty members and students. For specific administrator actions, see
2. Create a course group
Click the + icon in the upper part of the message list and select New Group. Select a group profile photo, select members to add into the group, and then click Create.
To learn more about how to create a group, click
3. Initialize an online course
You can start a course online through one of the following two methods:
Method 1: Start a video course
First, create a group for teachers and students. Then click the camera icon in the upper right corner, and click New Meeting to start a video course in the group.
Alternatively, you can click the + icon on Lark homepage and select New Meeting.
Note: You need to authorize Lark to access the microphone and camera of your current device when initiating or joining a meeting for the first time.
After youve launched a video course, you can invite students, assistants or other teachers to the course through one of the following three methods:
- •Search for contacts in the search box.
- •Click the Share button to share the meeting card to other contacts or groups.
- •The meeting ID is displayed at the top left corner. You can click it to copy and share the meeting ID to other contacts or groups.
Method 2: Start a live course
- •In a video meeting, the teacher can click the ... icon - Start Live Meeting to quickly start a live course. All members in the video meeting will receive an alert saying The current live meeting is already started. You can click the ... icon - End Live Meeting and confirm the action to end the live course.
After a live course has started, you can invite students to the class.
- •The teacher can copy and share the URL of the live course, and all participants in a live course have access to the live course URL. You can click the ... icon - Copy livestream address in the action bar to forward the URL to other students.
II. Deliver a course using audio-video features
You can choose one of the following three modes to deliver a course:
1. Deliver a course by screen sharing
In a video course, participants can click the Share icon to share their own desktop or app window.
To avoid teachers or students having choppy or delayed videos because of poor network connections, its recommended that teaching materials are shared with students in advance when video recordings or PPTs containing video clips are used in the course, so students can access the resources from their local drives whenever needed.
2. Deliver a course by document sharing
You can share a document in Lark during an online course. Document sharing features highlight the following advantages:
- •Tracking of the presenter's view: Students can select View with presenter to closely follow the presenter's mouse and explanations in the document.
- •Free view: Students can click View on your own whenever they wish to view the document at their own pace.
- •Real-time collaborative editing: With View on your own option, the teacher and students can simultaneously edit the document being shared on the screen.
- •Teachers can change permissions for all documents shared in a course.
When Readable while being shared only is selected, the document is only available for participants to read while it is being shared, that is, students have no permission to read the document after the session is over.
When Readable is selected, the shared document is readable even after the sharing session is over.
To learn more about document sharing features, click
III. Common actions in video courses
1. Mute all Unmute all
The meeting host can click the Host controls button to mute or unmute all microphones.
- •After the presenter selects Mute all, the microphones of all participants will be muted.
- •After the presenter selects Unmute all, the previously muted participants will receive a prompt asking whether they would like to turn on their microphones.
Note: The meeting initiator is, by default, assigned as the meeting host. If the host leaves the meeting, the system will automatically assign a new host.
2. Transfer the meeting host or remove a participant
The host can hover the mouse over a participant and then click the ... icon and select Remove from meeting or Make host as needed.
3. Lock a meeting
The meeting locking feature serves to enhance the security of a video meeting. You can click the Host controls button and then click Lock meeting to lock a meeting.
The available features and permissions of participants will change after a meeting is locked.
Host: The host can invite teachers or students to join a meeting by calling particular users, but they cannot invite others by sharing the meeting card.
Other participants: They will not be allowed to use the Invite function and hence cannot invite others into the course.
Q: How can I transfer the host permissions?
Desktop app: In the participants list of a video meeting, the host can hover the mouse over the desired participant to assign as the host and click the ... icon to perform the action.
Mobile app: You can click the Participants button, tap the desired participant and select Make host.
Q: How can I share the screen in a meeting?
A: Any participant can click the Share icon in the action bar to share his or her own desktop or app window, or directly share a document in Lark.
Q: When I shared my screen, the embedded videos in the PPT file for presentation were very choppy. How can I solve the problem?
A: The screen sharing feature only supports a lower frame rate at present. We will improve the feature shortly.
Q: Can I see which students spoke and joined in-class interactions after a course is over? Is there a text list available so that I can gain a plain view of participants' interactions?
A: This feature is not available for the time being, but we will support in-meeting chatting and hands-up features at a later stage. Please stay with us.
Q: Why can't other participants hear the video sound when I played a video on my shared screen?
A: We will support the sound sharing feature of individual devices during screen sharing at a later stage. Please stay with us.