> For the complete documentation index, see [llms.txt](https://docs.nuvolos.com/llms.txt). Markdown versions of documentation pages are available by appending `.md` to page URLs; this page is available as [Markdown](https://docs.nuvolos.com/how-to-guides/workflows-for-instructors/setting-up-group-projects/collaborative-application-editing.md).

# Collaborative editing in JupyterLab

<mark style="color:$primary;">**Outcome**</mark>\
You configure a JupyterLab application so multiple students can edit the same notebook simultaneously, with edits merging automatically.

<mark style="color:$primary;">**Before you start**</mark>

* You have set up a group-work space with one instance per group (see [Set up group projects](/how-to-guides/workflows-for-instructors/setting-up-group-projects.md) above).
* You will use JupyterLab 4.0.0 or later. Collaborative editing is most reliable from this version onward.

In collaborative editing mode, multiple students connect to the same application at the same time and edit files and notebooks together - similar to Google Docs. Edits merge automatically, with no file version conflicts.

#### Configure the Application

{% stepper %}
{% step %}
Add a JupyterLab application to the Master Instance of the group-work space (JupyterLab 4 recommended).
{% endstep %}

{% step %}
In the Master Instance applications view, open the ... Actions menu next to the application.
{% endstep %}

{% step %}
Click **CONFIGURE**.
{% endstep %}

{% step %}
Enable **Run in shared mode**.
{% endstep %}

{% step %}
Save the configuration.
{% endstep %}

{% step %}
Distribute the application to the group instances along with any regular files or instructions.
{% endstep %}
{% endstepper %}

For the full configuration screen (all shared-mode behaviors, connectivity options, and add-ons), see [Reference › Applications](/reference/applications.md).